Image of the day 07/06/2012

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Technical card

Imaging telescope or lens: CANON 200 f/2.8

Imaging camera: Canon EOS 50D

Mount: Orion SkyView Pro EQ

Guiding telescope or lens: Orion Finderscope 9x50

Guiding camera: Meade DSI

Software: PixInsightPHD guidingAstrometry.net

Filter: Astronomik CLS Clip-Filter

Accessory: 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

Astrometry.net job: 171318

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

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.

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pfile
License: None (All rights reserved) July 5, 2012
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M45 (late 2010/early 2011), pfile

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