Hemisphere:  Northern  ·  Constellation: Canes Venatici (CVn)  ·  Contains:  NGC 4627  ·  NGC 4631  ·  NGC 4656
Whale & Hockey Stick, 


            Jan Curtis
Whale & Hockey Stick
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Whale & Hockey Stick

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:March 16, 2015

Frames: 17x80" (22' 40") ISO3200

Integration: 22' 40"

Avg. Moon age: 25.05 days

Avg. Moon phase: 21.07%

Bortle Dark-Sky Scale: 4.00

Temperature: 6.00

Basic astrometry details

Astrometry.net job: 573058

RA center: 12h42m58s

DEC center: +32°1218

Pixel scale: 4.480 arcsec/pixel

Orientation: 90.687 degrees

Field radius: 0.906 degrees

Resolution: 620x698

Locations: Eldorado (6767' elev), @ Santa Fe, New Mexico, United States


I've pushed my resolution as far as I can in this image. The d7100 provides nearly 1.95x magnification so my 180mm lens approaches 360mm at the same f-stop. Pretty neat!


Sky plot

Sky plot


Whale & Hockey Stick, 


            Jan Curtis