|
NGC 7129 (Cep)
Click on the image for a larger version
| Date/Site: |
20., 23., 24. and 31. August 2021. Remote observatory on the AAR club's site in Presberg |
Exposure/
Filter: |
R: 11 x 300 seconds,
G: 12 x 300 seconds,
B: 9 x 300 seconds,
Hα: 68 x 600 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 open star cluster NGC 7142 is situated southwest of the emission- and dark nebula complex NGC 7129. Several Herbig-Haro-objects emerge out of this starforming region.
An APOD by Robert Gendler made with data of the Subaru-telescope shows filaments of glowing hydrogen gas, seemingly protruding from NGC 7129. But it could be a supernova-remnant handeln, coincidentally lying in the same line of sight. Even with 11 hours of Hα-data these filaments are not visible in my image. But obviously the whole region is filled with a diffuse Hα-glow and an arc of the supernova-remnant SNR 110.3 + 11.3 is visible in the lower left corner.
|
© Friedhelm Hübner, last revision: 03.12.2023