Image of the day 07/06/2012

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Technical card

Imaging telescopes or lenses: CANON 200 f/2.8

Imaging cameras: Canon EOS 50D

Mounts: Orion SkyView Pro EQ

Guiding telescopes or lenses: Orion Finderscope 9x50

Guiding cameras: Meade DSI

Software: PixInsightPHD guidingAstrometry.net

Filters: Astronomik CLS Clip-Filter

Accessories: DIY Thermoelectric cooler

Resolution: 2115x4075

Dates: Jan. 5, 2011

Frames: Astronomik CLS Clip-Filter: 158x240" ISO800 12C

Integration: 10.5 hours

Avg. Moon age: 0.61 days

Avg. Moon phase: 0.42%

Bortle Dark-Sky Scale: 8.00

RA center: 56.572 degrees

DEC center: 24.163 degrees

Pixel scale: 4.965 arcsec/pixel

Orientation: 179.565 degrees

Field radius: 3.167 degrees

Locations:

Description

10h32m on M45 (240s x 158, iso800, f/4). bortle red/white zone, CLS filter.

thanks to ferran's image [here](http://astrobin.com/8179) i was able to compute a proper background model for this reprocessed image. because of the CLS filter everything is blue to begin with and it would have been impossible to tell where to try to sample the background for gradient removal.

Comments

pfile
License: None (All rights reserved) Nov. 2, 2013

Sky plot

Sky plot

Histogram

M45 (late 2010/early 2011), pfile