Mark McCarthy Observing Blog
My visual descriptions of astronomical objects.
Monday, July 4, 2022
27 june 2022
Sunday, July 3, 2022
new dark site
Sh2-2: Very vague large cloud which appears as a mottling of the darkness, surrounding a triangle of similar magnitude stars. Overall it has the appearance of a pair of lungs, with a dark lane running N-S. Vogel notes: "This HII region is a wind blown bubble surrounding the O6.5 Ia star and prominent X-ray eclipsing binary HD 153919 and is in the same direction (but much further) as the star cluster NGC 6281." 4-inch 3nm.
NGC 6256: This globular cluster was nearby so I had a look. With the 8-inch unfiltered, the GC had an intensely bright and concentrated center, with a dense ball of stars surrounding that, and vast streams of stars radiating from it in all directions. What's more there were so many stars in the intensely rich 2-degree FOV. Stunning. Globulars will be my next project after Sharpless...
Sh2-3: Relatively small, viewed in the 8-inch. It has an S-shaped appearance starting with a faint coil of nebulosity around a bright star, then wending to the south where there is a thicker and brighter section. The sourthern edge is deliniated by a bright streak. In the 4-inch with a wider field, there is a near circle of nebulosity surronding it, brightest to the southwest. Vogel notes this object is 4.5pc in size, and "is ionised by an O6 V star, most likely CGO 439."
Sh2-4: Appears as a bright knot in a wider sweep of nebulosity, quite easy in the 4-inch. It is said to be ionized by and physically associated with the stars of open cluster Havlen-Moffat 1, which lies ~15' to the northwest. In this Aladin screen capture HM1 is under the reticle and the nebula is to the southwest. In the scope, HM1 appeared as a small clump of stars, much like many others in the field, and it didn't draw much attention. The nebula is also known as RCW 121. The nebula is in the Sagittarius Arm of the Milky Way,
Sh2-5: Large, fairly bright, no discernable shape other than vague cloud forms. In the southwest section the nebulosity seems to sweep out in a fan shape from one star. Also ionized by HM1.
Sh2-6: NGC 6302, The Bug Nebula. With the 4-inch it was very small in the 4-degree field, but easily seen and already showing an S-curve eminating from a bright central region. In the 8-inch and using a 20mm eyepiece to increase the image scale, unfiltered, the amount of detail seen was stunning. Both wings from the bright center were bifurcated or forked, and accentuated with bright knots, and there were many fine filaments woven throughout these wings.
Sh2-7: Long mottled streak eminating to the southwest from Delta Scorpii, breaking up into spreading filaments near a group of three bright stars. Best in the wide field.
Sh2-8: NGC 6334, Cat's Paw. Having never observed this area before, I was completely shocked at the amount and brightness of nebulocity here. The amazing nebula came alive with the 8-inch and 3nm. Everything was mottled and full of detail! Each "toe" was a a bright puff of nebulosity and mottled in its own way. The southern one spread in a fan shape from a bright star and seemed rippled with bow shocks. The southwest was dense and closely mottled, and the northern was a complex of streamers and dense curds. The northwest fragment slowly diffused, as if wind blown, to the west. A very remarkable area. With the wider FOV in the 4-inch there were faint trails nebulosity which seemed to connect it to other bright nearby HII regions NGC 6357 and Sh2-10.
Sh2-13: A very large cloud mottled cloud centered on a star, with the denser / brighter region forming a cap to the north. A larger field of nebulosity is closeby to the southwest.
Sh2-15: A mainly round nebula, darker in the middle and with streams of faint nebulosity escaping from the weak northeast wall. 8-inch shows the bright, thick south eastern arc and dark nebula intruding in the western section, a club-like clound and a very dark hole. The center of the nebula was crennlated with dark lobes. Vogel: "This HII region is ionised by the O8 V star HD 161853 and is part of the S15-S20 complex of HII regions. This region is also called W25 or Gum 69."
At this point I took a break and looked at the Milky Way with my night vision at 1x and 3x using my mirror mount. Simply stunning. The dark nebula were especially prominent, and in some sections seemed to be an evaporating fog off the stream of the Milky Way. Using a 5nm filter I traced all the nebulous clouds from the southern horizon through Cygnus and into Cepheus. What struck me was seeing a bridge of faint nebulosity which seemed to connect Sh2-119 behind the North American Nebula all the way to IC 1396 in Cepheus. This photo I found online (by Kotz Tar) kind of shows hints of the nebulosity, in red, but for me it was a very obvious, if faint, stream that very much seemed to connect the two. It wasn't just the star stream, it was definitely nebulous. This image also shows the Veil, including Pickering's Triangle, in the same field -- which I could see too. Pretty amazing.
I also saw a very large round nebula of around 10-degrees diameter centered on a bright star north of Scorpio's claws. The brighter portions are Sh2-27 & LBN 30. I observed these with the 4-inch at Spring CalStar, but only in pieces since the field of view was too small. Now with 1x I could see Sh2-27 and LBN30 as brightenings in a much larger round cloud of mottled nebulosity. (Image Project Nightflight)
Sh2-18 -19: Faint nebula which sprouts from two stars in a fan shape to the north, with a faint ragged flap drifting off to the northeast.
Sh2-21: Very faint, very small, irregular round glow, difficult. Took a long time to find and needed the 8-inch to bring it out. Vogel says "this HII region is located near the galactic nucleus and is associated with a giant molecular cloud and two star clusters." 8000pc distant.
Sh2-22: Large, thick parenthesis of nebula, very strongly mottled, surrounding a bright star. Vogel: "This is a ring nebula surrounding the O-star HD 162978." (image Jim Brunell)
Sh2-25: Lagoon Nebula. What can be said but so much detail, so much to be seen. Dark nebula smoking, a fizz of nebula round it, with arcs and bridges. Vogel: "The Lagoon nebula (M8 = NGC 6523-NGC 6530) is a large HII region mainly ionized by two O-class stars, 9 Sagitarii [O4V((f))] and HD 165052 (O6.5V + O7.5V). It is embedded within a molecular cloud which extends to the star cluster NGC 6530. Within M8’s core lies a distinctive bipolar nebula called the Hourglass, a blister-type HII region which has been produced by the O7.5V star Herschel 36 (Her 36). Note that RCW 146 also includes Gum 75 (Sh 2-29, Sh 2-31, and Sh 2-32), the nebula complex next to the Lagoon nebula....In 2003, an infrared cluster was reported in NGC 6559, which is part of Sh 2-29. Sh 2-29, Sh 2-31, and Sh 2-32 all appear to be part of the same nebula complex although the associated CO elocities suggest that these objects may have quite different distances."
Sh2-33: Extremely dim, ripples of nebulsity seen only when moving the scope, very large, in the 4-inch. Vogel: "The faint red glow of the nearby molecular cloud MBM 38."
Sh2-37: A bright, raggedly round nebula centered on a bright star. It is separated by a dark lane from a very large curving stream of nebulosity which is Sh2-35, which is fractured and crazed with many wisps of dark nebula. Vogel: "Sh 2-35 and Sh 2-37 are associated with a 130 thousand solar mass giant molecular cloud at a distance of 1800 pc and appear to be part of the Sagittarius OB7 association. Sh 2-37 is visible through a hole in this molecular cloud. This is a very active star formation region. Sh 2-37 is also known as IC 1283/1284 and the powerful radio source W34. Sharpless notes that this HII region is associated with the bright stars HD 167722 (B5), HD 167815 (B2) and HD 313098 (B5)."
Sh2-36: Extremely faint, looks like streamers hanging down from a cloud when it rains. Vogel: "The faint rusty red glow of nearby giant molecular cloud MBM 39."
Sh2-38: Small, extremely faint haze, in a dipper-like asterism, 8-inch. Vogel: "This appears to be the same as the reflection nebula VdB 114 surrounding the B8/B9Ib star HD 165811. It shows a strong (if small) image in hydrogen-alpha, however, so perhaps there is both emission and reflection in this little
Sh2-39 & -41: Sh2-41 is a very large glow streaming through very dark and dramatic dark nebulae B92 & 92 (which are white in this negative image). Sh2-39 is on the southern edge of Sh2-41and appears as a faint nebulous patch.
Sh2-40: faint, bifurcated faint nebula. Two close stars sprout the brighter wing of the nebula which sweeps to the south. The norther nebula is fainter and is fan shaped, with the wider section to the west. Vogel: "A look at this region in hydrogen-alpha shows that Sh 2-40 appears to be several bright knots of nebulosity extending north from the much larger nebula Sh 2-41. Sh 2-40 lies in the same direction as the powerful radio source W33, but the distance estimate for W33 is about 4000 pc. So there seem to be two objects here in the same field of view, one visible only at radio frequencies. Sh 2-38, Sh 2-40, Sh-41 and Sh 2-42 all appear to be embedded in the Sagittarius OB4 association. The massive protostellar object IRAS 18089-1732 is in the same area of sky but is located at a distance of 3600 pc.
Sh2-42: I tried very hard for this one, including using 8-inch with the 20mm eyepiece and flipping through all the filters. No luck. It is a PNe and I probably would get it with an OIII filter.
Sh2-45: M17, the Omega Nebula. Wow! Tons of detail, mottling, etc. Too much to describe. Vogel: This is M17, the Omega nebula, also called W38, the Swan nebula, and the Lobster nebula among other names. M17 is ionised by an O4V-O4V double star system (Kleinmann's star) at the core of the massive young cluster NGC 6618 (about one million years old), which contains over 800 stars, including 2 O5V star systems and 100 stars hotter than B9 (by comparison, Orion has 8 stars hotter than B9). The total ultraviolet flux is about 25 times higher than for Orion. A large part of the nebula is hidden by a dark dust lane the runs near the central cluster and splits the main visible nebula from two attached nebulae on the other side of the dust lane (IC 4706 and IC 4707). M17 is a blister on the side of a much larger
Sunday, June 26, 2022
25 june 2022
Saturday, June 25, 2022
24 june 2025
STF2381 AB: 152; 125: White A and 2 Dm, well split B. WDS says it's physical, but there is no overlap -3% of the parallax ranges, and the radial velocity delta 2.8 exceeds the escape velocity 1.7, so it is not likely binary.
18h 45m 30.77s +28° 15' 24.3" P.A. 122.00 sep 8.9 mag 8.27,10.36 Sp G8III/IV dist. 259.74 pc (847.27 l.y.)
STF2386 AB 152; 125x: Faint pair, near equal, wide. WDS says it is not physical, and there is no -92% overlap of the parallax ranges, it is not binary.
18h 45m 14.35s +35° 32' 21.1" P.A. 18.00 sep 21.1 mag 9.42,10.04 Sp A0
STF2387 AB: 152; 125x: White A and 2 Dm wide B, attractive pair. No records found in WDS.
STF2390 AB: 152; 125: Very pretty, pure white A, and 2 Dm B, closely split around 4". WDS uncertain, but there is 59% parallax range overlap, 1,323 AU weighted separation, 3.2+2.2 Msol, so it is likely binary.
18h 45m 49.83s +34° 31' 06.6" P.A. 155.00 sep 4.3 mag 7.37,8.56 Sp A7V dist. 357.14 pc (1164.99 l.y.)
STF2392 AB 152; 150x: Very finely split 2 Dm pair, B is faint but is just detectable with direct vision, suspect at 125x, better view at higher power. WDS uncertain, but there is no parallax range overlap, -40%, so in spite of the 1,229 AU weighted separation, 2.2+1.6 Msol, and the radial velocity delta 1.4 is less than the escape velocity 2.4, it is not likely to be binary.
18h 45m 09.99s +39° 13' 32.8" P.A. 319.00 sep 2.5 mag 9.25,11.07 Sp A2 dist. 934.58 pc (3048.6 l.y.)
STF2393 AB: 152; 125x: Very much fainter B, around 3 Dm, wide. WDS says not physical, and there is no -92% parallax range overlap, it is not binary.
18h 45m 10.84s +38° 18' 54.6" P.A. 24.00 sep 18.2 mag 7.80,10.40 Sp K5III dist. 689.66 pc (2249.67 l.y.)
STF2394 AB: 152; 125x: Faint pair, fairly well spilt, 1 Dm. WDS says parallax indicates physical, but in fact Gaia DR3 indicates there is no overlap of the parallax ranges, -63%, they are not binary.
18h 45m 28.48s +42° 02' 07.4" P.A. 203.00 sep 6.9 mag 9.61,9.96
STF2395 AB: 152; 125x: 2 Dm, B is quite faint but can see with direct vision, well split, looks like a planet in relation to A. WDS says this is physical, but there is no overlap of the parallax ranges, and the radial velocity delta 2.1 exceeds the escape velocity 1.8, it is not binary.
18h 45m 03.66s +46° 08' 07.5" P.A. 308.00 sep 8.5 mag 7.89,10.49 Sp A0 dist. 236.97 pc (773 l.y.)
STF2397 AB: 152; 125x: Light yellow A and 2 Dm B, fairly closely split around 4". WDS is uncertain, but there is 14% overlap of the parallax ranges, 1,098 AU weighted average separation, 3.2+1.8 Msol, so this is likely binary.
18h 47m 13.09s +31° 24' 20.2" P.A. 269.00 sep 3.9 mag 7.47,9.08 Sp G3III dist. 271 pc (884 l.y.)
STF2406 AB: 152; 125x: Comparatively bright white A, B is very faintly visible with foveal coaxing but it fades quickly, cannot hold it direct. WDS says this is physical, but there is no overlap of the parallax ranges, -25%, and in spite of the small 690 AU weighted separation, 2.3+0.9 Msol, and nearly equivalent radial velocity delta 2.9 vs. 3.0 escape velocity, it is not likely binary.
Tuesday, June 21, 2022
20 june 2022
Another frustration is SkyTools4. It eliminated the ability to sort columns within Realtime observing, making it much more difficult to narrow an observing list (like the long-term project lists I use). I checked on their website and the comments from the owner were really condescending, saying he removed the function because, in his opinion, an object not in optimal position is not worth observing. What an ass. I wanted to join his discussion forum to tell him off, but resisted. Who the hell is he to tell us how to observe? I found a rough work around but it is not to my satisfaction. I will probably shop for a different software.
I observed a few Struves but became increasingly frustrated with the scope power interruptions, and ended at 11pm. Very little darkness this time of year.
STFA 26 AB: 178; 125x: White stars, wide 3 Dm B. WDS says proper motion indicates physical, and there is only (given their closeness to us) 6% parallax range overlap, 1,144 AU weighted separation, 1.8+0.8 Msol, so this might be binary.
14h 16m 10.07s +51° 22' 01.3" P.A. 33.00 sep 39.0 mag 4.76,7.39 Sp A7IV+K0V dist. 29.07 pc (94.83 l.y.)
STF1806 AB: 178; 125x: Faint stars, significant delta, pretty wide. WDS says parallax indicates physical, but in fact there is no -10% parallax range overlap, it is not binary.
14h 08m 44.98s +48° 30' 24.5" P.A. 173.00 sep 13.1 mag 10.08,11.03 Sp F8
STF2093 AB: 178; 125x: A quick tumbling satellite went through the finder field as I was centering this star, like a dash line. Pale yellow and bright A, and faint wide B. WDS says not physical, and there is no -64% parallax range overlap, it is not.
16h 42m 53.76s +38° 55' 20.1" P.A. 266.00 sep 116.4 mag 3.58,11.72 Sp G8IIIb dist. 33.31 pc (108.66 l.y.)
STF1961 AB: 178; 125x: Very wide equal magnitude. WDS says not physical, and there is no -97% parallax range overlap.
15h 34m 35.33s +43° 31' 28.6" P.A. 20.00 sep 28.6 mag 10.07,10.17 Sp K2
STF1920 AB: 178; 125x: Wide near equal. WDS says proper motion indicates physical, but there is no -81% parallax range overlap, it is not binary.
15h 10m 48.36s +46° 51' 00.6" P.A. 109.00 sep 18.7 mag 9.92,9.98 Sp K0+K0 dist. 73.1 pc (238.45 l.y.)
STF1874 AB: 178; 125x: Light orange stars, wide, 2 Dm. WDS uncertain, but there is no -87% parallax range overlap, it is not binary.
14h 42m 09.70s +49° 07' 27.4" P.A. 289.00 sep 27.2 mag 8.82,10.17 Sp G5 dist. 448.43 pc (1462.78 l.y.)
STF1843 AB: 178; 125x: Ice blue-white A, wide 2 Dm B. WDS says proper motion indicates physical, and there is 52% parallax range overlap, 1,909 AU weighted separation, 1.7+1.1 Msol, so it is likely binary.
14h 24m 38.91s +47° 49' 50.0" P.A. 186.00 sep 19.8 mag 7.68,9.23 Sp F4V dist. 92.08 pc (300.36 l.y.)
STF1826 AB: 178; 125x: Light yellow stars, well separated, about 1 Dm. WDS says not physical, but there is 62% parallax range overlap, only 802 AU weighted separation, 1.7+1.4 Msol, and the radial velocity delta 0.8 is less than the escape velocity, 2.6, so it certainly is binary.
14h 15m 12.13s +46° 58' 26.6" P.A. 310.00 sep 4.5 mag 8.94,9.69 Sp F8 dist. 176.99 pc (577.34 l.y.)
STF1809 AB: 178; 200x: Very faint B needed foveal coaxing to detect and hold, closely separated around 4", almost 3 Dm. WDS uncertain, but there is 58% overlap of the parallax ranges, 1,199 AU weighted separation, 1.9+1.1 Msol, and the radial velocity delta 2.1 is equal to the escape velocity, so chances favor this being binary.
14h 08m 54.59s +46° 08' 03.4" P.A. 196.00 sep 4.3 mag 9.42,11.98 Sp G0 dist. 353.36 pc (1152.66 l.y.)
STF1815 AB: 178; 125x: More than 1 Dm, wide. WDS says it's physical, but there is no overlap -89% of the parallax ranges, is it not binary.
14h 12m 36.22s +45° 11' 52.5" P.A. 151.00 sep 9.0 mag 9.58,10.92 Sp K0 dist. 170.07 pc (554.77 l.y.)
STF1814 AB: 178; 125x: White stars, significant delta, fairly wide. WDS says parallax indicates physical, and there is 89% overlap of the parallax ranges, 1,304 AU weighted separation, 1.3+1.1 Msol, and the radial velocity delta 0.6 is less than the escape velocity 1.8, it is very likely binary.
14h 11m 00.99s +50° 15' 08.3" P.A. 256.00 sep 11.2 mag 9.25,9.83 Sp G5+G5
STF1929 AB: 178; 125x: Faint pair, 2 Dm, well separated. WDS uncertain, but there is no -51% parallax range overlap, it is not binary.
15h 16m 38.79s +33° 39' 07.2" P.A. 8.00 sep 6.5 mag 9.79,11.80 Sp G5
STF1901 AB: 178; 125x: White and very wide 2 Dm B. WDS says not physical, and there is no -91% overlap of the parallax ranges, it is not binary.
Thursday, June 16, 2022
14 june 2022
Tuesday, June 7, 2022
6 june 2022, hercules struves
Observed last night with the 6-inch refractor, in good seeing for it (but not good enough for the 20-inch). Went Struving in Hercules. I'm quite happy with the Nexus DSC, I was landing in the FOV all the time last night, which greatly increased the number of observations I could make. Started at 9:30pm and stopped shortly after 11pm.
STF 1982 AB: 152; 150x: Faint pair, 1 Dm, around 4" separation. WDS says physical, and there is 78% overlap of the parallax ranges, 1,090 AU weighted separation, 1.5+1.4 Msol, so it is likely binary.
15h 49m 51.25s +42° 47' 19.6" P.A. 299.00 sep 4.8 mag 9.95,10.12 Sp F8 dist. 270.27 pc (881.62 l.y.)
STF 1991 AB: 152; 150x: Close split around 3", faint, 1 Dm. WDS says it is physical, but there is no overlap of the parallax ranges -14%, in spite of the low 627 AU weighted separation, it is not likely to be binary.
15h 57m 26.92s +41° 39' 42.9" P.A. 195.00 sep 3.0 mag 9.45,10.41 Sp F5 dist. 178.89 pc (583.54 l.y.)
STF 2001 AB: 152; 150x: Faint pair, 1Dm and very wide companion. WDS uncertain, however there is 90% overlap of the parallax ranges, 2,315 AU weighted separation, 1.4+1.1 Msol, and the radial velocity delta 0.9 is less than the escape velocity 1.4, so this is almost certain to be binary -- need plenty of future measures to confirm.
16h 01m 13.23s +41° 50' 01.7" P.A. 168.00 sep 11.6 mag 10.01,10.98 Sp G
STF 2010 AB: 152; 150x: Very pretty goldenrod colored stars, 2 Dm, wide. Spectral class G7III+K0I (yellow/yellow-orange). WDS says proper motion indicates non-physical, but more telling is there not being any overlap of the parallax ranges, -40%.
16h 08m 04.55s +17° 02' 49.2" P.A. 14.00 sep 26.8 mag 5.10,6.21 Sp G7III+K0I dist. 112.74 pc (367.76 l.y.)
16h 08m 37.85s +40° 03' 11.2" P.A. 91.00 sep 8.4 mag 8.62,10.41 Sp F2 dist. 255.75 pc (834.26 l.y.)
STF 2015 AB: 152; 300x: Blue-white A, closely separated 2 Dm B needed 300x to split. WDS uncertain, but there is 59% overlap of parallax ranges, only 311 AU weighted separation, 1.5+1.2 Msol, so it is likely binary.
16h 08m 54.75s +45° 21' 11.8" P.A. 159.00 sep 3.0 mag 8.24,9.52 Sp F5 dist. 97.56 pc (318.24 l.y.)
STF 2016 AB: 152; 150x: Widely separated around 6", light yellow stars, 2 Dm. WDS calls it physical, but there is barely 1% overlap of the parallax ranges, 1,187 AU weighted separation, 1.7+1.4 Msol, so it should be called uncertain instead.
16h 12m 07.05s +11° 54' 39.2" P.A. 147.00 sep 7.5 mag 8.49,9.60 Sp A3 dist. 172.12 pc (561.46 l.y.)
STF 2017 AB: 152; 150x: White stars, wide, half a delta mag. WDS says it is not physical, and there is no -88% overlap of the parallax ranges, confirming it is not binary.
16h 12m 08.39s +14° 32' 56.0" P.A. 258.00 sep 29.9 mag 8.60,9.13 Sp K2 dist. 322.58 pc (1052.26 l.y.)
STF 2021 AB: 152; 150x: Brilliant white near equal pair, closely split around 3". WDS grade 4 orbit, 949-year period. There is 22% overlap of the parallax ranges, only 101 AU weighted separation, 0.9+0.9 Msol, and the radial velocity delta 0.7 is less than the escape velocity 5.6, so it is certainly binary.
STF 2023 AB: 152; 200x: Very closely separated, 1 Dm white stars. WDS uncertain, but there is 18% parallax range overlap, only 216 AU weighted separation, 1.4+1.2 Msol, so it is likely binary.
16h 14m 30.89s +05° 31' 21.0" P.A. 222.00 sep 1.8 mag 8.70,9.38 Sp F5
STF 2024 AB: 152; 150x: Bright light orange A star, and 5 Dm faint blue B star, wide. An unusual large delta mag pair from Struve. WDS says it's physical, and there is 25% overlap of the parallax ranges, a large 5,377 AU weighted separation, 4.3+1.2 Msol -- given the large mass of the primary is it possible this is binary.
16h 11m 47.60s +42° 22' 28.2" P.A. 44.00 sep 23.6 mag 5.86,10.73 Sp K4III dist. 193.8 pc (632.18 l.y.)
STF 2025 AB: 152; 150x: Nice! White A, very faint B closely separated around 3". WDS says it's physical, but there is borderline 0% overlap of the parallax ranges, only 386 AU weighted separation, 1.9+1.1 Msol, so it is possible it is binary.
16h 11m 11.71s +47° 33' 36.1" P.A. 164.00 sep 2.6 mag 8.03,9.75 Sp F0 dist. 141.64 pc (462.03 l.y.)
STF 2026 AB: 152; 150x: Faint stars, near equal, around 5" separation. WDS grade 3 orbit 433-year period. There is 34% overlap of the parallax ranges, only 89 AU weighted separation, 0.6+0.6 Msol, and the radial velocity delta 0.9 is less than the escape velocity 5.0, so it certainly is binary.
16h 15m 57.07s +07° 21' 24.8" P.A. 15.90 sep 3.6 mag 9.48,9.86 Sp K5 dist. 26.04 pc (84.94 l.y.)
16h 15m 16.64s +04° 15' 46.6" P.A. 81.00 sep 1.9 mag 8.77,8.86 Sp F0 dist. 271 pc (884 l.y.)
STF 2049 AB: 152; 300x: Beautiful pair, cream white A and light blue B, 1 Dm, closely split. WDS uncertain, and there is no parallax range overlap -33%, so it is not binary.
16h 27m 54.63s +25° 59' 03.4" P.A. 195.00 sep 1.1 mag 7.33,8.10 Sp A2.5V dist. 132.8 pc (433.19 l.y.)
STF 2051 AB: 152; 150x: Pretty pair, white A and light blue wide B. WDS says it's physical, but there is no parallax range overlap -72%, it is neither physical nor binary.
16h 29m 25.06s +10° 35' 31.4" P.A. 19.00 sep 13.8 mag 7.68,9.42 Sp G5III dist. 218.82 pc (713.79 l.y.)
STF 2052 AB: 152; 150x: Very nice light-yellow stars, near equal, around 3" separation. WDS grade 2 orbital solution 229-year period. 38% parallax range overlap, only 40 AU weighted separation, 0.8+0.7 Msol, certainly binary.
STF 2053 AB: 152; 150x: Faint stars, 1 Dm, wide. WDS says they're physical, and unfortunately there is no Gaia parallax data for the secondary.
STF 2061 AB: 152; 300x: Nice! 3 Dm B appears with foveal coaxing only, then can hold direct, very much fainter and closely separated. WDS says it's physical, but surprisingly there is no parallax range overlap -84%, so it cannot be binary.