| Name | Helix Galaxy |
| Designation(s) | Arp 336, NGC 2685 |
| Object Type(s) | Galaxy |
| Relevant Catalog(s) | All (Chron), Arp, NGC |
| Arp Category | Miscellaneous galaxies |
| Obs. Lat/Long | 42° 17', 073° 57' |
| Constellation | Ursa Major |
| Date and Time Observed | 2022-12-20 20:30:13 |
| Instrument | Evolution 9.25 SCT with 0.63 reducer |
| Camera | ASI294mc-Pro |
| Image Details | Up is 173.0 degrees E of N. Total integration time was 24m 40s. Exposure 10s@375g, UV/IR Cut Filter. Darks and Flats subtracted. Alt/Az mount, no guiding. |
| Description | This was captured very early in my EAA career... I'd had less than 30 days of successful captures. This is a relatively small target which tested the limit of my reduced C9.25 SCT, particularly because I was observing from a not terribly rigid deck the required 10s exposures in SharpCap. By appearances, this is a very conventional spiral galaxy with the exception of the bulge below and to the right. It does not seem to be a merger, as the disk is not distorted. It does appear to be an exchange of materials from one part of the disk to another. I presume Arp didn't know what to make of it either since he categorized it as miscellaneous. |
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