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Messier 45 (OSC), 



    
        

            Linda
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Getting plate-solving status, please wait...
Messier 45 (OSC), 



    
        

            Linda
Powered byPixInsight

Acquisition details

Dates:
March 18, 2018
Frames:
25×120(50′) ISO800
Integration:
50′
Darks:
25
Flats:
25
Bias:
25
Avg. Moon age:
0.95 days
Avg. Moon phase:
1.01%
Temperature:
4.00

RA center: 03h46m06s.49

DEC center: +23°5854.7

Pixel scale: 5.652 arcsec/pixel

Orientation: 85.708 degrees

Field radius: 3.042 degrees

More info:Open 

Resolution: 3102x2322

File size: 10.6 MB

Locations: Home, Broadlands, VA, United States

Data source: Backyard

Description

This was my first attempt at 200mm focal length. This was shot from light polluted northern Virginia near Dulles Airport. I could only manage one hour of frames before the camera batteries died (happily the 12V camera adapter is here now). Of that hour, only 50 minutes could be used. The neighbors house began "rising" through the frame which might make an entertaining animation but spoiled the shot. Given the lateness in the season for M45 I probably won't be able to add any time to it this until the fall.

The lens was at 200mm, f/5.6. The ISO was 800.

This was a bit harder to process than my previous very wide field Orion. The temperature was warmer so the image was noisier. It was shot from even more light polluted skies and would have benefitted from much longer integration time but, alas, this was probably my one and only attempt to get what data I could. Given this was more of an experiment in making everything work together I got what I wanted out of it.

I did manage to get flats this time and that did help.

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