Posted 25 December 2012 - 11:42 AM
Initially the seeing was 3/10 Pickering but latter improved to 5/10 ,still not very good.
I wasn't able to split 52 Ori,neither Zeta Ori or the dim,small companion of Sigma Ori,not speaking of the actual target 32 Ori.
It was already half past two in the morning,all this session looked to be a waste of time.
In a last attempt I directed my 125mm F/7 Dobsonian to Delta Geminorum and to my surprise, hardly visible but visible,the companion was there at about PA=about 220 degree.
So I come back to Eta Ori and ,,voila'' this star was resolved at 144x/Radian 6mm in two touching Airy discs,the companion a bit fainter than the primary,maybe one magnitude fainter,being at PA =60-70 degree.On a better sky my scope will split this star like a breeze, somewhat reminding me Pi Aquilae.
I hope for a night with better seeing to train again my telescope on Eta and 32 Ori.
I'm still fascinated with Orion,what a gold mine of celestial treasures.
Merry Christmas everybody,Mircea
Posted 25 December 2012 - 09:31 PM
Posted 25 December 2012 - 09:45 PM
Nice report despite the poor seeing. I DID have a nice time with doubles the other night. Sigma Orionis is stunning at 70x and 91x - it's this strung out multiple that's rather unique. Castor was perfect and even the trap with e and f and all in 4/10 seeing just hovering neath 100x.
Thirty two Orionis is a sight too, simpler but charming and well lit. I'm learning this winter just how rich the constellation is in doubles and multiples. There's ALWAYS something I overlooked in astronomy.
I'm sure in better seeing your long focus 127mm reflector will come through. It sounds like quite the instrument. 32 isn't so hard but like all doubles the seeing needs to sit down a bit. I'd like to hear how you persevere here in the future.
I was going to go out tonight but I cancelled. I observe behind my condo but with everyone still coming back from where ever it's too many passerbys. I sincerely enjoy the quite solitude - lol - despite the condo challenge!
Posted 26 December 2012 - 12:26 PM
I will try ,and I guess keep on trying, on 42 Ori.
I understood from the reports this double star is much harder than Delta Cyg and Iota Leonis,which are not always easy to split.So I'm not having high hopes but I will definitely try,thank you for the suggestion.
I'm quite curious about what will happen.
Until now on my ,,hall of shame'' there are three big failures:
-Lambda Cyg where ,sometime,I see a ghost or shadow between the first diffraction ring and the Airy disc , and this is the most I can see there when seeing and colimation cooperate
-E and F stars in Trapezium;I saw them with my 8 inch F/6 Dobsonian but they refuse to show in the 125mm Dobsonian
-Sigma 1126, a 0.9 '' double,East to Procyon in Canis Minor
Thank you Pete,nice observing session,you had very good seeing,I use Sigma Ori to test the seeing,to know what to expect.
I will keep you updated about my future attempts on 32 Ori and other.I have not see E and F stars in Trapezium and many other.
Like you ,I enjoy solitude even if sometime I participate to outreach like ISAN or IAY:
After that,I start to growl if I'm disturbed while observing my beloved double stars.
Merry Christmas once again,Mircea
Posted 27 December 2012 - 01:39 AM
Posted 29 December 2012 - 02:24 PM
The field in my 10 inch will show 42 and 43 Ori. 43 Ori has a distinct yellow shading (F Class) which helps to confirm which star to concentrate on. There are three slightly dimmer stars and ~ 1/2 dozen in the 12-14 mag range.
The best I've been able to get is an elongation at 300X and VERY brief hints at the star being split, along an axis E-W. A line from the companion through the primary points roughly to the field star between 42 and 43 Ori. Perhaps after this next storm passes by this can be confirmed with a bit more power.
Tec MC250/12 and 10MM Ethos provided the 300X, and best view so far.
Posted 29 December 2012 - 07:38 PM
Posted 30 December 2012 - 09:01 AM
Posted 01 January 2013 - 08:05 AM
The seeing was at least 7/10 if not 8/10 on the Pickering scale.
As a warm-up and to find the right focusing I observed all the six stars in the Lockyer sequence:Rigel,Mintaka,Alnitak, ,Sigma,Lambda,52 Ori,all resolved.
Latter I was happy to split very clearly 32 Ori and Eta Ori.
I started at 116x/Celestron ,,orange'' 7.5mm Plossl (very good ocular),173x/Vixen 5mm Ortoscopic,232x/Plossl 7.5mm 2X Barlow.
- 52 Ori was split only at 173x-unstable and 232x-stable image
- Sigma Ori's dim and tight companion was seen only at 232x
- 32 Ori was noticeable easier to split than 52 Ori
- Eta Ori seemed harder to split than I remember Pi Aquilae to be,maybe the companion is dimmer
I failed on Sigma 1126 ,East of Procyon and E and F stars in Trapezium.Maybe I saw a glint forming a triangle with A and B stars, but never confirmed as a stable image of a star.
Happy New Year to everybody,regards,Mircea
Posted 06 January 2013 - 12:53 PM
Posted 06 January 2013 - 07:59 PM
Anyway, glad you had some good seeing and nailed a couple. I found Alnitak a nice double and easily split, too.