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Friday, September 4, 2015

Rosette Nebula from a professional observatory in Tenerife

This is my second remote image this year but with different partner. I get contacted by Eric Recurt and we started a cooperation between us. The imaging season, up here 65N, hasn't started yet. This is a great way to produce high quality photos during my mandatory summer pause.


The Observatory locates at 2400 m altitude and at 28 degrees North. The site has excellent seeing condition usually below 1" year , 0.8 " on average to be exact and can be below 0.3 "  


The instrument is a 340mm F3.3 astrograph with FLi Pro 16803 + Centerline 10 position filter wheel on a DDM 85 mount .

The first published photo from Teneriffe, 
NGC 2244, the Rosette Nebula
Click for a large image

This is a broadband LRGB image of the Rosette Nebula from a remote observatory in Tenerife.

A closeup
Click for a large image

Technical details

Processing workflow

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
 340mm F3.3 astrograph


Cameras and filters
FLI PL 16803

Exposure times
Luminance, 10 x 600s = 1h 40min
Red = 5 x 300s = 25min
Green = 5 x 300s = 25min
Blue = 5 x 300s = 25min
Total 2h 55min

An experimental starless version as an animation

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