M27 (Vul)

M27 (Vul)

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Date/Site: 7. August 2020, remote observatory on the AAR club's site in Presberg
Exposure/
Filter:
R: 12 x 300 seconds,
G: 12 x 300 seconds,
B: 17 x 300 seconds,
Hα: 23 x 300 seconds,
O3: 10 x 300 seconds, (-20°C)
Camera: Moravian G3-16200 with Astronomik Type II-filters
Optics/
Instrument:
250mm f/4,7 Newton with VIP-3010 Paracorr on 10Micron GM1000 HPS
Guiding: Lodestar attached to a 61mm-finder,
focusing: Microtouch and FocusMax,
data acquired remotely using CCD-Commander and MaximDL 6,
calibration and processing: PixInsight 1.8

M27, the Dumbell-nebula, was imaged by me with an assortment of instruments over the past years.
The RGB-data of this series was mixed with an artificial colour-image created from starless Hα- and O3-frames, to enhance the outer wisps of ionized gas.
With this camera/optics combination the image already looks like a widefield shot.
 
 
And here some older images of this object:

M27 (Vul)

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Date/Site: September 24th, 2011, AAR-observatory in Presberg
Exposure/
Filter:
R: 6 x 600 seconds, G: 6 x 600 seconds, B: 7 x 600 seconds (-15°C)
Camera: SBIG ST10XME, CFW9 with SBIG LRGB-filters, AO-8
Optics/
Instrument:
10“-Ritchey-Chrétien on AP1200
Darks, flats, deblooming, alignment and stacking: MaximDL 5,
Levels and curves: Photoshop CS3.

The Dumbbell nebula was the only possible target this night simply because it was in the sole region of the sky that was permanently clear.
As a comparison a shot with the Newton made one year before.

M27 (Vul)

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Date/Site: July 19th, 2010, AAR-observatory in Presberg
Exposure/
Filter:
R: 7 x 200 seconds, G: 4 x 200 seconds, B: 3 x 200 seconds (-15°C)
Camera: SBIG ST10XME, CFW9 with SBIG LRGB-filters, AO-8, RCC1 coma-corrector
Optics/
Instrument:
26cm-Newton on Gemini 41 Observatory
Focusing with Robofocus
Darks, flats, deblooming, alignment and stacking: MaximDL 5,
Levels and curves: Photoshop CS3.

Here for the first time integration time was invested only in the colour frames. It is interesting to see that even with short exposures hints of the outer Hα shell are visible.
And here the first image with the 300Da and the 6"-Newton.

M27, Dumbbell Nebula (Vul)

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Date/Site: August 11., 2007, Rifugio Monte Muro, Maurerberg, Southern Tyrol
Exposure/
Filter:
1 x 5 minutes, 5 x 6 minutes, 2 x 10 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, alignment and stacking: MaximDSLR,
levels and curves: Photoshop CS

 

© Friedhelm Hübner, last revision:  17.01.2021