Hemisphere:  Southern  ·  Constellation: Hydra (Hya)  ·  Contains:  M 83  ·  NGC 5236  ·  Southern Pinwheel Galaxy
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My Messier Project: Last Target, M83, First Night, 



    
        

            David Redwine
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My Messier Project: Last Target, M83, First Night

Getting plate-solving status, please wait...
My Messier Project: Last Target, M83, First Night, 



    
        

            David Redwine
Powered byPixInsight

My Messier Project: Last Target, M83, First Night

Imaging Telescopes Or Lenses
Celestron 8" EdgeHD · CELESTRON EdgeHD 800
Imaging Cameras
ZWO ASI1600 MM Pro
Mounts
Celestron CGX-L
Filters
Baader Moon & Skyglow Filter 1.25" · ZWO 1.25" L · Zwo Green 1.25" · Zwo Blue 1.25" · ZWO Red 1.25"
Accessories
Zwo 8 position 1.25" Filter wheel · Skyshed POD · Zwo Filter Wheel 1.25", 5 slot, Electric · Celestron Edge HD 800 f/0.7 · Apertura Field flattener for 60 ed
Software
Topaz Labs DeNoise AI · Celestron CPWI · PixInsight · Software Bisque The SkyX Serious · PHD2 Guiding · Adobe Photoshop Version: 21.1.3 · APT
Guiding Telescopes Or Lenses
Apertura 60 mm f/6 (FPL-53 Doublet) · Celestron RACI
Guiding Cameras
ZWO ASI1600MC · Zwo ASI 120 MM-S

Acquisition details

Dates:
April 12, 2021
Frames:
15x240" (1h)
Integration:
1h
Avg. Moon age:
0.35 days
Avg. Moon phase:
0.14%

RA center: 13h36m56s.867

DEC center: -29°5222.88

Pixel scale: 0.889 arcsec/pixel

Orientation: -96.323 degrees

Field radius: 0.406 degrees

More info:Open 

Resolution: 2652x1935

Data source: Backyard

Description

Although it is possible to image M83 from my little Observatory, it is in-and-out of the trees for most of its transit, making guidance difficult. M83 takes a little less than 3hrs to go from my east treeline to the west treeline. At the east tree line it is only 12 degrees high, at transit it get as high as 16 degrees.

My HD800 has never had a issue with mirror flopping, but it has not spent much time this close to level. Near transit it flipped and flopped on 3 consecutive 240s subs. Between changing my guide star to dodge limbs and running over to the Observatory to lock the mirror at 2am, this was not my usual "start it and pick the data off the network in the morning" type of job.

This is a total of 1h. of data:

L 4x240s

R 3x240s

G 4x240s

B 4x240s

At this low altitude the raw image had an overpowering red and orange glow, making the "correct" values for the red and green channels sheer guesswork on my part.

The good news is I have now, technically, finished my Messier list. Re-shoots start on the next clear night with M83!

CS

David

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My Messier Project: Last Target, M83, First Night, 



    
        

            David Redwine

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Central USA