M108 and M97 (UMa)

M108 and M97 (UMa)

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Date/Site: 7., 8. and 9. March 2022. Remote observatory on the AAR club's site in Presberg
Exposure/
Filter:
R: 29 x 300 seconds,
G: 31 x 300 seconds,
B: 30 x 300 seconds,
L: 44 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: ASI120 attached to a 61mm-finder,
focusing: Microtouch and FocusMax,
data acquired remotely using CCD-Commander, PHD_Broker with PHD2/multistar-guiding and MaximDL 6,
processing: MaximDL 6 and PixInsight 1.8

The galaxy M 108 and the planetary nebula M 97 are an attractive duo in the large field of view of the Moravian. The outer O3-shell of the PN can be seen as a delicate envelope in this image.
The shell can be seen more distinctly in this image with the 40cm-Newton.
Its been a while that this dissimilar pair was imaged by me:

M108 and M97 (UMa)

Click on the image for a larger version

Date/Site: March 31., 2009, AAR-observatory in Presberg
Exposure/
Filter:
R: 10 x 300 seconds,
G: 10 x 300 seconds,
B: 10 x 300 seconds, (-25°C)
Camera: SBIG ST10XME, motorized Atik-filterwheel with Astronomik-RGB-filters
Optics/
Instrument:
6"-Newton auf Gemini 41 Field, Baader coma-corrector
focusing with RoboFocus and MaximDL
Flatfielding, darks, deblooming, alignment and stacking: MaximDL
levels and curves: Photoshop CS

Remarks: bright sky because of the moon, no wind, +3,5°C, dry.

© Friedhelm Hübner, last revision:  03.12.2023