Hemisphere:  Northern  ·  Constellation: Coma Berenices (Com)  ·  Contains:  IC 3571  ·  NGC 4562  ·  NGC 4565  ·  Needle Galaxy
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NGC 4565 - ‘on edge’, 



    
        

            Tom Gray
NGC 4565 - ‘on edge’
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NGC 4565 - ‘on edge’

Getting plate-solving status, please wait...
NGC 4565 - ‘on edge’, 



    
        

            Tom Gray
NGC 4565 - ‘on edge’
Powered byPixInsight

NGC 4565 - ‘on edge’

Technical card

Imaging telescopes or lenses: Meade 2080 SCT 8" LX5

Imaging cameras: Meade DSI 3 Pro

Mounts: Meade Fork mount w/wedge Meade

Guiding telescopes or lenses: Meade 8x50mm Finder/Guider

Guiding cameras: Orion Starshoot autoguider

Focal reducers: Meade f6.3 focal reducer/field flattener Meade 0.63x Reducer

Software: Han Klein ASTAP v0.915  ·  SiliconFields / Ivo Jager Startools v1.7  ·  PHD2 Guiding V 2.6  ·  Meade Envisage V4.10

Filters: Meade RGB-IR Cut 1.25"

Accessory: Bahtinov Mask  ·  Homemade ST4 autoguider  ·  Finder guider 8x50 Finder Scope


Dates:April 5, 2021

Frames: 29x120"

Integration: 1.0 hours

Avg. Moon age: 23.25 days

Avg. Moon phase: 38.36%


Basic astrometry details

Astrometry.net job: 4384286

RA center: 12h 36' 6"

DEC center: +25° 57' 28"

Pixel scale: 0.945 arcsec/pixel

Orientation: 359.691 degrees

Field radius: 0.223 degrees


Resolution: 1360x1024

Locations: Home 'observatory' (Bortle 5), Derbyshire, United Kingdom

Data source: Backyard

Description

I wanted to revisit this wonderful edge on spiral at f6.3 in my 8” SCT to try and pull out a bit more detail in the core and add some colour. Atmospheric stability had definitely deteriorated from the previous evening, with a HFD ~5, and my autoguider was fighting the poor seeing with RMS ~1.5. I had to throw away over half the luminance frames due to atmospheric distortion, despite the focus being OK, and my colour frames were a ‘washout’, possibly due to a filter slide not being fully closed, resulting in some light ingress. I quite like the image scale, but sadly no more detail, and posted really as a reminder to self that some clear, dark nights are just not suitable.

Fortunately, I consider Astrobin as a bit of an art (and science) community, where anything much goes and we can share and learn from our successes and mistakes, whilst we improve our skills and processes. If you are after a high end gallery, then there are plenty of those to choose from as well. I try not to get too uptight or ‘on edge’ about these things, as long as we are all having some fun.

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