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Thursday, September 3, 2015

Something new! My first light from The Deep Sky West (DSW) remote observatory


The imaging season, up here 65N, hasn't start yet. I have had a wonderful opportunity to use couple of remote telescopes. One in Canary islands and the other in New Mexico. I'll publish more images from both telescopes soon.

The first photo published is from Deep Sky West observatory. It's taken under a very dark sky. Unlike in my current light polluted location, it's now possible to image broadband targets, like galaxies, reflection nebulae and dark nebulae! HERE is some more info about the Deep sky West Observatory


LDN 1250 & 1251
In constellation Cepheus, click for a large image

A natural color LRGB photo of  the dark nebula LDN 1250 in Cepheus


Closeups
Click for a large image





Galaxy behind the dust


Magnitude 16 galaxy at middle of the image is PGC 166755, size 1.3 x 0.6 arcmin.

An experimental starless photo of LDN 1250 & 1251 as an animation

The nebula stands out nicely without stars. There are couple of much more distant galaxies at the image. One at right most left and the other at upper left from middle.

INFO
Image contains objects LDN 1251, LBN 558, PGC 69472, PGC 166755
This low mass star forming region in Cepheus is an extended cloud of gas and dust.  There are two galaxies visible in the image. At most left middle lays magnitude 15.5 galaxy PGC 69472, angular dimensions are 
2.1 x 1.6 arcminutes. Galaxy PGC 166755 At middle left shines at magnitude 16 and has size of 1.3 x 0.6 arcminutes.


Technical details

Processing workflow

Stacked and calibrated in CCDStack2.
Deconvolution with a CCDStack2 Positive Constraint, 27 iterations, added at 33% weight
Color combine in PS CS3
Levels and curves in PS CS3.

Imaging optics
 Takahashi FSQ-106EDXIII

Mount
 Astro-Physics Mach1AP GTO with GTOCP3

Cameras and filters
QSI683WSG

Astrodon Luminance Tru-Balance E-Series Gen
Astrodon Red Tru-Balance E-Series Gen 2
Astrodon Green Tru-Balance E-Series Gen 2
Astrodon Blue Tru-Balance E-Series Gen 2

Exposure times
Luminance, 26 x 900s = 6.5h
Red = 14 x 900s = 3.5h
Green = 14 x 900s = 3.5h
Blue = 14 x 900s = 3.5h
Total 17h


A single calibrated and stretched 15 min. Luminance frame as it comes from the camera
Click for a large image



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