| Designation(s) | Arp 212, NGC 7625 |
| Object Type(s) | Galaxy |
| Relevant Catalog(s) | All (Chron), Arp, NGC |
| Arp Category | Galaxies with irregularities |
| Obs. Lat/Long | 42° 17', 073° 57' |
| Constellation | Pegasus |
| Date and Time Observed | 2024-10-26 20:03:00 |
| Instrument | EdgeHD 8" w/f7 reducer-1,422mm FL |
| Camera | Player One Apollo-M Mini |
| Image Details | Up is 279.5 degrees E of N in positive images; Up is 180 degrees E of N in inverted images. Total integration time was 16m. Exposures 15s@300g, UV/IR Cut Filter. Darks subtracted, no flats. Dithered and recentered in SharpCap. No guiding. |
| Description | Arp remarks: "Narrow chaotic absorption tubes across one end". I had to look up "absorption tube" and I'm not sure I found the correct answer. The term can describe the phenomenon where light from a distant galaxy passes through a cooler gas cloud, causing specific wavelengths of light to be absorbed, creating "absorption lines" on the galaxy's spectrum. Presumably this refers to the white tubes in the inverted images which are mostly on the S end of NGC 7625. These are consistent with a cooler feature (will be darker in reality). It was easier for me to sharpen the image in inverted space, and the reason why the featured image is inverted. Anyway, even though it's quite small, this target was engaging and beautiful. This was my third outing with my new, Player-one Apollo-Mini monochrome camera and I started feeling comfortable with it. While occasionally color helps interpret an image, much more often the greater sensitivity of the mono camera makes for a more detailed image, as in this case. |
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