Hemisphere:  Northern  ·  Constellation: Canes Venatici (CVn)  ·  Contains:  M 94  ·  NGC 4736
M94, 



    
        

            Jan Curtis
M94
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M94

Technical card

Imaging telescopes or lenses: Nikon NIKKOR 180 F2,8 AIS ED

Imaging cameras: Nikon d7100

Mounts: ORION Sirius EQ-G

Guiding telescopes or lenses: Nikon NIKKOR 180 F2,8 AIS ED

Software: Noel Carboni's Astro Tools for PhotoShop Noel Carboni Actions  ·  Photoshop CS 6 Adobe  ·  PIXINSIGHT PixInsinght 1.8 RC7


Dates:April 24, 2015March 9, 2016April 5, 2016April 7, 2016

Frames:
62x90" ISO1250
212x60" ISO1600
59x90" ISO1600

Integration: 6.6 hours

Avg. Moon age: 8.44 days

Avg. Moon phase: 10.34%

Bortle Dark-Sky Scale: 3.50

Temperature: 5.50


Basic astrometry details

Astrometry.net job: 1055041

RA center: 12h 50' 54"

DEC center: +41° 7' 12"

Pixel scale: 1.795 arcsec/pixel

Orientation: 90.265 degrees

Field radius: 0.921 degrees


Resolution: 620x388

Locations: Eldorado (6767' elev), @ Santa Fe, New Mexico, United States; Home observatory, Cheyenne, WY (elevation: 6014'), United States

Description

Original taken during lots of airglow despite stable atmosphere. See time lapse clip of airglow: https://vimeo.com/125875888

Version "B" adds 106 subs. Resampled at 2.5X. More to follow.

Version "D" adds 165 subs.

Version "E" is a more aggressive take.

Comments

Revisions

  • M94, 



    
        

            Jan Curtis
    Original
  • M94, 



    
        

            Jan Curtis
    B
  • M94, 



    
        

            Jan Curtis
    C
  • M94, 



    
        

            Jan Curtis
    D
  • Final
    M94, 



    
        

            Jan Curtis
    E

Sky plot

Sky plot

Histogram

M94, 



    
        

            Jan Curtis