Hemisphere:  Southern  ·  Constellation: Orion (Ori)  ·  Contains:  1 Mon  ·  17 rho Ori  ·  19 bet Ori  ·  2 Mon  ·  20 tau Ori  ·  21 Ori  ·  22 o Ori  ·  23 m Ori  ·  24 gam Ori  ·  25 Ori  ·  27 p Ori  ·  28 eta Ori  ·  29 e Ori  ·  3 iot Lep  ·  30 psi Ori  ·  31 Ori  ·  32 A Ori  ·  33 n01 Ori  ·  34 del Ori  ·  36 ups Ori  ·  37 phi01 Ori  ·  38 n02 Ori  ·  39 lam Ori  ·  40 phi02 Ori  ·  41 the01 Ori  ·  42 c Ori  ·  43 the02 Ori  ·  44 iot Ori  ·  45 Ori  ·  46 eps Ori  ·  And 139 more.
Getting plate-solving status, please wait...
Orion Widefield, 



    
        

            Brian Boyle
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Orion Widefield

Getting plate-solving status, please wait...
Orion Widefield, 



    
        

            Brian Boyle
Powered byPixInsight

Orion Widefield

Imaging telescopes or lenses: Rokinon 85mm F/1.4

Imaging cameras: ZWO ASI2400MC Pro

Mounts: SkyWatcher EQ6R-Pro

Software: PixInsight Core Version 1.8 Ripley

Accessory: ZWO Asiair Pro  ·  ZWO Canon Lens Adapter


Dates:Feb. 1, 2021

Frames: 95x30" (47' 30")

Integration: 47' 30"

Avg. Moon age: 18.65 days

Avg. Moon phase: 83.85%


Astrometry.net job: 4194655

RA center: 5h 35' 9"

DEC center: -1° 23' 16"

Pixel scale: 14.293 arcsec/pixel

Orientation: -171.243 degrees

Field radius: 13.592 degrees


Resolution: 3715x5755

Locations: Speargrass Flat Observatory, Queenstown, Otago, New Zealand

Data source: Backyard

Description

With 6mins darkness before a 90%+ moon rose, and lots of cloud about, I decided I had nothing to lose and so tried a bit new and experimental for me.

I put my Rokinon 85mm lens onto my ZWO ASI2400 to give a 10deg field of view. Was all set with darks and flats by 10.30pm - ready for 50mins of twilight observing when my ZWO ASIAir stopped talking to my telescope mount.

After a few minutes of switching off and on, unplugging cables, I pulled out my hand controller and did things manually. I couldn't dither or auto guide, so the resultant image suffers from a few blemishes and I only managed 45minutes before the moon started to overwhelm things again. Packing up just after midnight. I trie one final unplug and system re-boot and - of course - it all started to work again. Oh well, there is always another night.

Given my first attempt at mount a camera lens on a ZWO camera, the conditions and the equipment (operator?) failure, its an OK image. And enough to make make come back again. The Rokinon lens shows up a fair bit of aberration at f/4 - worse than when used with the Canon body. I suspect this is the mounting.

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Orion Widefield, 



    
        

            Brian Boyle