NGC 1499 (Per)

NGC 1499 (Per)

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Date/Site: September 16th, 2012, Garden of the Old Cafe Fischer of Hannes and Roswitha Schedler in Altaussee
Exposure/
Filter:
Hα: 6 x 600 seconds (-20°C)
Camera: SBIG ST10XME, CFW9 with Baader 7nm-filter
Optics/
Instrument:
Tak FSQ-85mm/450mm on AP400
Calibration: MaximDL 5,
processing: PixInsight 1.7 and Photoshop

The picture shows the improvements in processing of the data in comparison to the earlier attempts:

California-nebula in H-alpha

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California-nebula in Schwarz-Weiß

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Date/Site: December 29., 2008, AAR-observatory in Presberg
Exposure/
Filter:
Hα (13nm): 10 x 15 minutes (-30°C)
L: 6 x 10 minutes (-30°C)
Camera: SBIG ST10XME, motorized Atik-filterwheel with Astronomik-RGB-filters
Optics/
Instrument:
4"-TMB-refractor on the Gemini 41 Field mount of the AAR
focusing by hand with the aid of MaximDL 4.6
Deblooming, darks, alignment and stacking: MaximDL,
levels and curves: Photoshop CS

Remarks: good tranparency, almost no wind, -7°C, imaged together with Tobbe Konz.

California-nebula, H-alpha combined with color data of a DSLR-image

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California-nebula, luminance combined with color data of a DSLR-image

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These pictures document an attempt to combine the H-alpha- and the luminance frames with the color information of the 2007 DSLR-image to get a LRGB – in my opinion with very mixed success.
How those astrofoto-wizards get a proper color balance eludes me.
It can be seen clearly how the difference in focus-geometry of refractor and mirror prevent a perfect alignment of the images.
And here the same object with the 300D and the 6".

NGC 1499, California-Nebula (Per)

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Date/Site: September 14., 2007, Rifugio Monte Muro, Maurerberg, Southern Tyrol
Exposure/
Filter:
10 x 5 minutes
Camera: Canon EOS 300Da
Optics/
Instrument:
6"-Newton on Gemini 41 Observatory mount, Baader-coma-corrector
focusing with RoboFocus and DSLR Focus
webcam-guiding with MaximDSLR through 4"-FH-refractor
Darks: Fitswork,
aligning and stacking: Regim,
levels and curves: Photoshop CS

 

© Friedhelm Hübner, last revision:  03.12.2023