by Alvin Huey
| Location | IHOP |
|---|---|
| Date | 03-12-05 |
| Observer | Alvin Huey |
| Telescope | 22" f/4.1 equipped with a Paracorr |
| Eyepieces | 35mm Panoptic, 17mm Type 6 Nagler, 13mm Type 1 Nagler, 9mm Type 1 Nagler |
| Filters | Lumicon O-III and UHC filters. Transparency started at 7/10 and ended as 6/10. Seeing varied from 6/10 at the beginning to 5/10 as the night wore on especially to the east. |
| Abell 19 | 22" f/4.1 (155 and 203x) - Considerably faint planetary nebula shows a round even surface brightness disk. A 12.4 magnitude star was located in the center, but it is not the central star. A 13.6 magnitude star lies 2' south. |
|---|---|
| Abell 21 | 22" f/4.1 (75 and 155x) - When I was scanning for it in low power, I found it immediately as a bright crescent shaped nebulous object. Studying this nebula more, little filamentary structure was seen with bright spots on the south and north ends of the crescent. The south piece is a little brighter than the north end. A 12.1 magnitude star lies immediately west of the bright north part. Many stars are embedded in the nebula. The east portion seemed to have a very faint extension almost all the way out to the 10.9 magnitude star lying about 10' SWW from the "center". Estimated size is about 12' across from end to end. The western piece was not seen at all. |
| Abell 14 | 22" f/4.1 (203x) - This is a very faint and elongated smudge with an aspect ration of about 2 to 1. It's 40 x 20" surface is even throughout. It's 15th magnitude central star was spotted in the center. This nebula was spotted on my third attempt! |
| Abell 27 | 22" f/4.1 (155 and 203x) - This Abell planetary is very faint, small and slightly elongated. Its surface brightness is even throughout. Only seen with averted vision. I could not locate a central star in the center, but its published central star is seen at the NNW end of the fuzzy spot. |
| Abell 30 | 22" f/4.1 (155 and 203x) - This considerably faint planetary is round. Its 120" disk is even brightness throughout. The 14th magnitude central star is located at the center. |
| Abell 31 | 22" f/4.1 (75x) - This large planetary is bright and round. Showed a slightly irregular surface brightness generally brighter towards the center. The brightest parts lies about 2' to the south and east. The southern piece is a little brighter than the east, but the eastern piece is about twice as large. This nebula is bracketed by a group of five 10 and 11th magnitude stars with many fainter stars embedded |
| Abell 28 | 22" f/4.1 (155 and 203x) - This planetary is very faint and large. It appears just a brightening of the background sky with a generally round shape. No other features were seen and tough. |
| Abell 33 | 22" f/4.1 (203 and 293x) - Bright round disk with a noticeably brighter western side. A 7.2 magnitude star dominates the western side. The 15.5 magnitude central star was barely seen with the O-III filter. Taking the filter off renders the nebula almost invisible, but the central star pops out. |
| Abell 34 | 22" f/4.1 (75, 155 and 203x) - The bright spot on the west edge was seen without any filters and with a filter, it seemed to disappear. I'm guessing it might be a galaxy. The actual nebula was not seen (3-12-05) |
Posted on sf-bay-tac Apr 11, 2005 21:21:34 PT
Converted by report.pm 1.2 Apr 18, 2005 20:07:25 PT