by Alvin Huey
NELM = 6.5 from zenith to about 40-45 degrees, then at 6.0 to about 25-30 degrees, except the Sac sky glow to the WSW. Seeing was pretty good (8/10). I spent about 30 seconds at Jupiter at 528x. Nice!
| Observer | Alvin Huey |
|---|---|
| Location | IHOP |
| Date | 06-04-05 22” f/4.1 equipped with a Paracorr |
| Eyepieces | 35mm, 17mm, 9mm, 7mm, 5mm and 3mm UHC and O-III filters used. |
| Abell 35 | RA:12h 53m 41s Dec: -22Ί 51 42” Size: 12.8 | Mag: 12.0p,12.7v Central star: 9.63(variable) | NELM: 6.0 Transparency: 6/10 Altitude: about 30Ί |
|---|---|---|---|
| 22” f/4.1 (75, 155 and 203x) — Featureless faint slightly oval disk (1.5:1) with a two stars embedded in the nebula. The 9.6 magnitude central star is off-center towards the west. The brightest part of the nebula is slightly elongated at about 2 by 1.5 centered on the central star. An 11.3 magnitude star is towards the east. The O-III filter shows it a quite a bit better than the UHC, but both filters shows this 100% of the time with averted vision. Estimated size is about 6 across with position angle of about 90Ί. PA of the bright part is also 90Ί. | |||
| Abell 16 | RA: 06h 43m 57s Dec: +61Ί 47 14” Size: 2.3 | Mag: 15.9p,14.5v Central star: 17.4 | NELM: 6.0 Transparency: 6/10 Altitude: about 30Ί |
| 22” f/4.1 (155x and 203x) — Extremely faint round patch with even surface brightness. This object requires averted vision and the O-III filters to bring it out. I have a very tough time seeing it with the UHC filter, perhaps about 50% of the time. Estimated size is about 90” across. The central star is an averted vision star without any filters, but the nebula is invisible. A 9.2 magnitude star lies 3 SW from the center and a 11.1 magnitude star lies 2 south. | |||
| Arp 38 (NGC6412) | RA: 17h 29m 37s Dec: +75Ί 42 18” Size 2.5 x 2.1 | Mag: 12.3b SB: 13.4 | NELM: 6.5 Transparency: 7/10 Altitude: 50Ί |
| 22” f/4.1 (203, 294 and 377x) — This Arp is a bright and slightly elongated (1.3:1) patch. Some mottling is seen with averted vision with a faint stellar core, otherwise even surface brightness throughout the halo. Estimated size is about 2.0x 1.5 with a PA of 100Ί. | |||
| IC4660 (30 WNW from Arp 38) | RA: 17h 21m 45s Dec: +75Ί 50 51” | Mag: 14.5p | NELM: 6.5 Transparency: 7/10 Altitude: 50Ί |
| 22” f/4.1 (294 and 377x) — This considerably bright galaxy shows a thin spindle of about 60” by 10” thick of even surface brightness. Even surface brightness throughout. PA = 170Ί | |||
| Arp 185 (NGC 6217) | RA: 16h 32 40s Dec: +78Ί 11 57” | Mag: 11.8b SB: 12.9 Size: 3.0x by 2.4 | NELM: 6.5 Transparency: 7/10 Altitude: 50Ί |
| 22” f/4.1 (294 and 377x) — Very bright stellar nucleus. 1.5:1 elongated patch with a PA of about 160Ί. Estimated size is about 2 long by 1.3 wide. Spiral arms going clockwise from outside in is seen along with the bar” with a PA of 160Ί. Upon studying this galaxy a little more, some significant mottling was observed with the barred spiral features becoming a bit easier to see. A 15th magnitude star lies to the NW and a 16th magnitude star lies on the southern bar” of the galaxy. | |||
| Arp 136 (NGC 5280) | RA: 14h 58m 40s Dec: +53Ί 53 10” | Mag: | NELM: 6.5 Transparency: 7/10 Altitude: 80Ί |
| 22” f/4.1 (294 and 377x) — This pair are the same size, but one of them (NGC5281) is significantly fainter than NGC 5280. NGC 5281 is very bright with a significantly brighter center and NGC 5281 is a faint even surface brightness patch. Estimated size of both galaxies is about 1.5 by 0.75 PA of NGC 5280 is 90 degrees and NGC 5281 is 160 degrees. NGC 5281 is about 3.5 NE of NGC 5280. A pair of 7th magnitude stars separated by 38 lies about 8 east of NGC 5280 and is kept off the field. | |||
Posted on sf-bay-tac Jun 06, 2005 22:09:13 PT
Converted by report.pm 1.2 Sep 24, 2005 21:52:43 PT