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Contains:  IC 2708, IC2708, Leo Triplet, M 65, M 66, M65, M66, NGC 3623, NGC 3627, NGC 3628, NGC3628
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The Leo Triplet, 



    
        

            astropical
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The Leo Triplet

Technical card

Imaging telescopes or lenses:Sky-Watcher 150/750 PDS

Imaging cameras:Nikon D5500

Mounts:Orion Atlas EQ-G

Guiding telescopes or lenses:ZWO Guidescope 30mm F4

Guiding cameras:ASI290MM

Focal reducers:Baader MPCC Mark III

Software:PHD2 GuidingDeepsky StackerPhotoshop CS2


Dates:March 16, 2020

Frames: 58x60" ISO1600

Integration: 1.0 hours

Darks: ~20

Avg. Moon age: 22.23 days

Avg. Moon phase: 49.12%

Temperature: 17.00


Astrometry.net job: 3330326

RA center: 11h 19' 36"

DEC center: +13° 16' 8"

Pixel scale: 1.497 arcsec/pixel

Orientation: 84.836 degrees

Field radius: 0.717 degrees


Resolution: 3007x1691

Locations: Balcony, Okinawa, Japan

Data source: Backyard

Description

Finally the clouds granted me about an hour for the Leo Triplet. The image is 50% cropped because the T-ring sits loosely on the DSLR causing a bent optical axis resulting in trailing stars at image corners (in spite of autoguiding) in addition to a not too accurate coma corrector. Curiously, the Nikon D5500 produces more noise than the Nikon D5300 (same settings) in spite of sporting the same sensor. Hmm....

Comments

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astropical
astropical
License: None (All rights reserved)
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Revisions

  • The Leo Triplet, 



    
        

            astropical
    Original
  • Final
    The Leo Triplet, 



    
        

            astropical
    C

C

Description: "Denoised" with the trial of Topaz DeNoise AI. However, denoising should be applied BEFORE the major processing steps. Next time :-)

Sky plot

Sky plot

Histogram

The Leo Triplet, 



    
        

            astropical