Back to Observing Reports Straight to my observing comments
from my night
observing on July 12 and 13th, 2010. Pretty
much
straight
out
of
my
notebook.
This is only a partial list, a
list of interesting and somehat challenging objects. Equipment used: 22” f/4 reflector with no tracking 20mm Pentax XW finder eyepiece 12.5, 7mm Baader Genuine Orthoscopics 10 and 6mm Zeiss ZAO-II Orthoscopics 5mm Takahashi LE July 12, 2010 GSSP NELM = 6.9, Seeing = 3/5 for objects near the horizon and 4/5 for objects higher. |
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NGC 6302 (17 13 44.3 -37 06 13 size 85x44” mag 12.8p mag* 21.1) 22” (308 and 383x) – Very bright and structured. Appears much like the photo. The central area is too bright to attempt to pick off the central star. The east lobe is a little larger than the west lobe. Two filaments are prominent on the east lobe. 1.4’ long and 0.4’ wide. PA =90 |
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Henize 2-289 (17 49 48.2 -37 01 28 size 10” mag 12.0p mag* 16.8) 22” (308 and 383x) – Very small bright round glow with sharp edges. Located in a very star rich field. The O-III filters helps a lot in identifying the planetary. At 383x it starts to appear non-stellar. 1.2’ NW of a 3.7 mag star. NGC 6441 lies 5.2’ due east of the star. |
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Henize 2-253 (17 36 29.8 -39 21 57 size 18” mag 14.4p mag* -) 22” (308 and 383x) – Fairly bright even surface brightness round glow with defined edges. It was barely visible without the O-III filter. The filter brings it out very well. 0.3’ across. A 9.6 mag star lies 1.5’ west. |
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Minkowski 1-28 (17 47 38.4 -22 06 20 size 15” mag 16.8p mag* 20.8) 22” (308 and 383x) – Very faint round glow visible only with the O-III filter. About 0.3’ across. A pair of 12th magnitude stars lies 1.3’ west. |
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NGC 6439 (17 48 20.3 -16 27 35 size 5” mag 13.8p mag* 20.2) 22” (308 and 383x) – Bright nearly stellar object. With the O-III filter, it appears about as bright as the nearby mag 12.3 star that lies 1.2’ north. It becomes distinctly non-stellar at 383x. About 5” across. Note: MegaStar incorrectly labels the 12.3 mag star as the PNe. |
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NGC 6445 (17 49 14.9 -20 00 36 size 44x30” mag 13.2p mag* 19.0) 22” (308 and 383x) – Appears like a faint dumbbell with two arcs at opposite ends (NW and SE) A 3:2 elongated glow with two bright lobes. The NW lobe is slightly larger than the SE lobe, but the SE lobe is brighter. About 0.8’ long and 0.5’ wide. PA = 135 A 12.5 mag star lies 0.8’ NW and a 12.0 star lies 2.1’ due south. |
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NGC 6765 (19 11 06.8 +30 32 39 size 40”’ mag 13.1p mag* 16.0) 22” (308 and 383x) – A bi-polar planetary. PA = 30. The north lobe is significantly larger than the south lobe. The north lobe has a 0.2’ long bright part and the south lobe contains a 0.1’ round part. The PNe is 0.7’ long. A pair of faint stars at the SW edge and another pair of very faint stars at the NE end. |
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Kohoutek 3-27 (19 14 30.2 +28 40 43 size 16” mag 14.9p mag* 17.2) 22” (308 and 383x) - Very faint small round glow with defined edges picked up pretty easily with the O-III filter.. About 0.2’ across. A blazing 8.1 mag star lies 2.7’ due west and a 11.8 mag star lies 1.3’ north. |
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MCG-1-53-12 (20 49 52.1 -07 01 18 size 3.0x0.3’ mag 14.6) 22” (186 and 230x) – Very faint, thin even surface brightness glow with diffuse edges. No central brightening. 1.3’ long and PA = 0. A 14.3 mag star lies 1.1 a little north of west from the center. A pair of 13-14th mag stars lies just under 2’ to the NE. |
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July 13, 2010 GSSP NELM = 7.0, Seeing = 3/5 for objects near the horizon and 4/5 for objects higher.
22” (308x) – Very faint 3:2 elongated glow with diffuse edges. Even surface brightness throughout. 0.3’ long and PA = 90. |
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Minkowski 1-22 (17 35 10.1 -18 34 20 size 9” mag 13.3p mag* -) 22” (383x) – Slightly elongated glow. About 0.15’ long and PA = 90. Three stars in a row. Responds well with O-III filter. |
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Henize 2-260 (17 38 57.4 -18 17 35 size 10” mag 11.0v mag* 14.2) 22” (383x) – Nearly stellar. Mild response to the O-III filter. About 5” across. A row of 4 16th magnitude stars lies 30” north. |
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Henize 2-261 (17 39 54.8 -21 14 14 size 17” mag 15.3p mag* -) 22” (308 and 383x) – Faint round glow with diffuse edges. The O-III filter brings it out. 0.2’ across. A 16th magnitude star lies just off the SE edge. |
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Henize 2-264 (17 40 26.8 -27 01 03 size 37” mag - mag* 20.3) 22” (308 and 383x) – Very faint irregular glow just SW of a mag 12.2 star. I could not make out the shape, but it definitely looks irregular with two slightly brighter arcs at the north and south edges. A small triangle of 11 to 14th mag stars lies about 2’ NE. |
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PK 28+10.1 (18 06 00.5 +00 22 43 size 36” mag 16.8p mag* 16.8) 22” (186x) – Very faint round glow with diffuse edges. O-III only. About 0.6’ across. A very faint star is just off the SW edge. |
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Kohoutek 1-16 (18 21 52.2 +64 21 53 size 1.9’ mag 14.5p mag* 15.0) 22” (186, 308 and 383x) – located the star field, but did not see the nebula. O-III filter was used too. |
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Henize 1-4 (19 59 18.5 +31 54 34 size 22” mag 14.1 mag* 21.1) 22” (186, 230, 308 and 383x) 0 Faint, oval with a 10.6 mag star on the SE tip. PA = 135. About 0.4’ long and 0.3’ wide. Fairly well defined edges. |
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Kohoutek 3-46 (19 50 00.3 +33 45 53 size 30” mag 16.4p mag* -) 22” (186, 308 and 383x) – located the star field, but did not see the nebula. O-III filter was used too. |
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NGC 6857 (20 01 48.7 +33 31 32 size 38” mag 11.4p) 22” (186x) – Appears much fainter than the DSS image. Irregular box shape, about 1’ square. Very rich star field. |
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Hubble VII in NGC 6822 (19 44 55.8 -14 48 55 size ~6” mag -) 18” (328x with 6mm ZAO-II) – Stellar, field found fairly easily. A faint star is just 6” SSE. Steve Gottleib and I used a detailed image to star hop there…it took a little while to fish it out in the sea of stars. It appeared just non-stellar at 328x.
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Back to Observing Reports All Observing Reports are copyrighted by Alvin Huey. You can print them for personal use only. |
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