NGC 3691: not a Vera Rubin Galaxy
| Designation(s) | NGC 3691 |
| Object Type(s) | Galaxy |
| Relevant Catalog(s) | All (Chron), NGC |
| Obs. Lat/Long | 42° 17', 073° 57' |
| Constellation | Leo |
| Date and Time Observed | 2026-02-26 22:38:00 |
| Instrument | EdgeHD 8" w/f7 reducer-1,422mm FL |
| Camera | Player One Apollo-M Mini |
| Image Details | Up is 276.6 degrees E of N. Transparency: Good. Seeing: Good. Total integration time was 30m. Exposures 20s@225g, no filter. Dithered and recentered in SharpCap. No guiding. |
| Description | At only 1.4x1 arc-minute, I was puzzled how this was an acceptable "Vera Rubin" galaxy. It is relatively bright and regular, and nearly face-on, which I thought might have made it an acceptable target for Rubin's measurements, though I was dubious. Structurally, at least at the resolution I can perceive through my telescope, it's not terribly inspiring, so I judged 30m of integration enough and moved on to the next target on my list. I should have double checked. The Rubin catalog is UGC 3691, not NGC! That's a little surprising, as the UGC is a 1973 catalog of nearly 13,000 galaxies cataloging all of the galaxies larger than 1 arcminute from the 1958 POSS survey. Most are small and faint. Anyway, this is not the galaxy. |
| Catalog Links | All Listings |
