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From Andromeda to Taurus - Close pairs - Great seeing in SE England

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#1 R Botero

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Posted 30 November 2019 - 07:17 AM

After weeks of miserable weather we had clear, steady skies in SE England last night. In fact, the seeing was one of the best I've had in years.  I managed to repeat some observations that I hadn't achieved in 3-5 years and visited some lower altitude pairs not typically available in my average poor seeing.  All notes below using my 10" f/20 Mak-Cass at 320X. Rounded magnitudes and separations from SkySafari Pro.  Position angle (PA) estimated visually.

  1. Almach - 57 And:  Started with this jewel which was just about to culminate.  Brilliant and perfect golden and deep sapphire blue colours.  Complete diffraction rings (DRs) around each component.
  2. STF228:  6/7 at 0.6".  First observed in 2016.  PA seems to be increasing.  My notes from last night "Touching discs in single envelope DR.  PA310. White."
  3. STF249: 7/9 at 2.3". PA200.  "Close faint companion due South.  Both white, pale white-blue."
  4. HD14502: 7.8/8.3 at 0.8".  "Not split.  Too faint".  I realised then that my corrector had dewed up so had to go inside and get a hair dryer!
  5. STF227 - 6 Tri:  5.3/6.6 at PA70/245. "Beautiful colour contrast pair. Yellow and blue. PA70."
  6. STF285:  7/8 at 1.7". PA160.
  7. STF300:  7/8 at 3.2".  "Perfect cat's eyes.  PA135.  Close white pair showing DRs."
  8. BU525:  6.7/7.5 at 0.5".  "Elongated.  Not split.  PA275-300."
  9. Epsilon Arietis - STF333:  4.6/5.6 at 1.3".  "Beautiful close and similar pair.  Both white to pale yellow.  Both showing DRs.  PA195-205."
  10. Pi Arietis - STF311:  5.3/8 at 3.2".  "Significant delta.  Secondary looks fainter than 8 (variable?).  White-yellow and pale blue.  PA120-130. Third fainter away at PA145."
  11. Lewis 57 - WDS 03063+2515:  7.5/8 at 1.5".  No notes.
  12. 10 Arietis - STF208:  5.7/7.9 at 1.6".  "Nicely split with much fainter secondary.  PA350."
  13. STF381:  7.2/8.8 at 1.1".  "Very close.  Small gap in between.  PA110."
  14. Tau Arietis - COU259:  5.3/8.1 at 0.9".  "Secondary shows as fattening of primary's DR.  PA215."
  15. 7 Tauri - STF412:  6/6.9 at 0.8".  "Beautiful triple.  AB almost touching.  PA350.  White-yellow.  Third (optical?) far at PA45.
  16. Atik - Omicron Persei - BU535:  3.8/6.7 at 1.1".  "Faint secondary just outside DR.  Bluish.  PA20."
  17. HD22195 - BU533: 6.9/7.7 at 1".  "Nice equal tight pair at PA60." 
  18. AG Persei - STT71:  6.7/8.7 at 0.7".  No notes.  Not firm split.
  19. HD26842 - STT77:  7.4/8.2 at 0.5".  "Suspected elongated.  PA300."
  20. RW Tauri - VBS9:  8.2/8.1 at 1.9".  No notes.
  21. HD27639 - BU87: 5.9/8.6 at 1.9".  "Much fainter but close.  PA165-170."
  22. STT86:  7.3/7.7 at 0.5".  "Touching discs.  Due N.  Equal."
  23. STF559:  6.2/7 at 3.1".  "Nice pair of eyes.  PA95-100.  White."
  24. Delta3 Tauri - 68 Tau - KUI17:  4.3/7.9 at 1.8".  "Beautiful in great seeing.  PA340.  Brilliant white and pale blue."
  25. 55 Tauri - STT79: 6.9/8.6 at 0.6".  "Very tight almost touching.  Due N."
  26. 80 Tauri - STF554:  5.6/8.1 at 1.5".  "Clearly split in perfect seeing.  Primary looks elongated (?)"
  27. STF535:  6.8/8.3 at 1".  "Nice tight pair running at PA275."
  28. 47 Tauri - BU547:  4.9/7.3 at 1.3".  Not split.
  29. HD30869 - BU552:  6.3/8.9 at 0.8". "Extremely close.  PA275."

And finally, outside of my planned constellation boundaries but couldn't leave it behind in such great conditions:  i Orionis - 14 Ori - STT98:  5.3/6.7 at 1".  "Beautiful almost kissing discs.  Touching DRs.  PA275."

All in all, a great session; around 3 hours in total. Finished around midnight and could have stayed longer but was not wearing the right (foot) gear and at -1C and 100% humidity I was struggling a bit by then!

Try the above next time you are out and let me know what you see!

 

Roberto


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#2 Astroman007

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Posted 30 November 2019 - 08:56 AM

Very good report, Roberto. Detailed and precise.


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#3 coopman

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Posted 30 November 2019 - 09:47 AM

Nice report. Thanks. I had my Evolution 8 out the other night and just started selecting double stars from the object list. Many of them I had never seen before, or if I did, I was not aware of their names. Had a good time with them & will do it again soon.
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#4 Cotts

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Posted 30 November 2019 - 10:26 AM

Excellent work, Roberto!!

 

Thanks for posting!

 

Dave


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#5 Magnus Ahrling

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Posted 05 December 2019 - 07:37 PM

Thanks for your obs. report, Roberto! Very nice indeed. 30 doubles in 3h struggling with -1C,100% humidity and not the right footgear. Now that`s what I call passionwaytogo.gif

 

-Magnus



#6 R Botero

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Posted 06 December 2019 - 02:34 AM

Cheers Magnus! We both know that this far north, anytime the seeing cooperates there are no excuses for not being out!
Best wishes
Roberto
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