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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.

Observatory

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 "  

Instruments

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

Mount
ASA DDM 85

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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