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The Sirius A and B separation was at greatest extent as seen from Earth recently so I thought I would have a go at capturing Sirius B in an image. Sirius was at the meridian at 20:51 and here at 51° north that's only 21° altitude. I only get down to 25° in most directions but I can just get down to 20° towards the SSE.
Here's 7 minutes of 10 second luminance exposures:
Not sure about the off centre, top right donut and nebulosity! No sign of the pup! I might have a go at using a foil strip over the sensor to dim the A star in the hope of catching some photons from the B star!
Super crisp snd sharp. Big halo around Sirius as expected the secondary halo possibly a ghost reflection?
The top right nebulous looking area is quite interesting.
Maybe some other sort of reflection?
Everyone has fits with Alnitak and it pales in brightness compared to Sirius!
I think it looks really nice as-is, but I certainly hope that you can dim it down somehow and capture the pup!
Nice work Graeme!
Jim
Scopes: Explore Scientific ED102 APO, Sharpstar 61 EDPH II APO, Samyang 135 F2 (still on the Nikon).
Mount: Skywatcher HEQ5 Pro with Rowan Belt Mod
Stuff: ASI EAF Focus Motor (x2), ZWO OAG, ZWO 30 mm Guide Scope, ASI 220mm min, ASI 120mm mini, Stellarview 0.8 FR/FF, Sharpstar 0.8 FR/FF, Mele Overloock 3C.
Camera/Filters/Software: ASI 533 mc pro, ASI 120mm mini, ASI 220mm mini , IDAS LPS D-1, Optolong L-Enhance, ZWO UV/IR Cut, N.I.N.A., Green Swamp Server, PHD2, Adobe Photoshop CC, Pixinsight.
Dog and best bud: Jack
Sky: Bortle 6-7
My Astrobin: https://www.astrobin.com/users/Juno16/
