Contains:  NGC 5371, NGC 5354, NGC 5353, NGC 5350
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NGC5353 and friends, 





    
        

            Joostie
NGC5353 and friends

NGC5353 and friends

Link to TIFF/FITS: http://www.drogenberg.be

Technical card

Resolution: 2500x1669

Dates:May 5, 2018

Frames:Optolong L-Pro 2" Nikon T-Ring: 24x300" ISO1600 bin 1x1

Integration: 2.0 hours

Darks: ~12

Flats: ~50

Bias: ~1

Avg. Moon age: 19.84 days

Avg. Moon phase: 73.59%

Bortle Dark-Sky Scale: 4.00

Mean SQM: 20.48

Temperature: 15.00

Astrometry.net job: 2046555

RA center: 208.541 degrees

DEC center: 40.343 degrees

Pixel scale: 1.172 arcsec/pixel

Orientation: 44.500 degrees

Field radius: 0.489 degrees

Locations: Meldert @Home, Hoegaarden, Vlaams Brabant, Belgium

Data source: Backyard

Description

I solved more or less the field tilt I face yesterday night, and very carefully collimated through the Nikon with all optics in place. NikonBackYard proves invaluable for this.

I tested again with a higher ISO rate at 1600 instead of 800, but the increase in noise is noticeable so I will go back to the trusty old ISO800 (however maybe it's not that bad even since I only used 12 darks and at 15°C).

Temperature dropped consistenly which required refocusing every second frame.

I left the black ribbon at the image bottom since it contains the nice little spiral galaxy.

This group is surprising as I find the many spiral galaxies beautiful... It's known as Hickson 68. Most galaxies are mag. 11 and down.

Brightest members here: NGC5353 5350 5371 5354 5358

Faintest visible ?

The orange bright star is HD121197 magnitude 6.5

Comments

Author

Joostie
Joostie
License: Attribution-NonCommercial-NoDerivs Creative Commons
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NGC5353 and friends, 





    
        

            Joostie