| Description | Images | SH2-127Sh2-127/LBN 436 is an emission nebula in northern Cygnus not far north of M39. Galaxy map has this to say about it: "Radio analysis reveals that Sh 2-127 consists of two distinct components - a larger weaker and more diffuse source (WB89 85A) to the northeast, consistent with ionisation by an O7 class star, and a stronger but smaller source to the southwest (WB89 85B), consistent with ionisation by an O8.5 class star. (However, it is also possible that both components are ionised by a single star.) Both components are located near the northwestern edge of a molecular cloud and are embedded in the molecular gas." |
| SH2-132SH2-132/LBN 473 is an emission nebula in southern Cepheus. It's a bit big for my FOV but I never let that stop me before. Galaxy map puts its distance as a bit over 10,000 light-years. It is usually seen in narrow band images often using H alpha for the luminance channel. This tends to miss the rather strong OIII emission and its reflection component making most photos of this image appearing mostly red. Normally the OIII is rather cyan in color being rather equal in my blue and green filters. Here the blue was stronger than the green. I assume this means there's a reflection nebula component to this nebula as well. Or it has far more H beta than is usually seen. |
| SH2-135SH2-135 seems composed of LBN 492 and LBN 493. These are emission nebulae in southern Cepheus. This is a very early image taken before I knew how to combine Ha alpha data with color data. I didn't take the necessary frames to do it right and haven't ever returned to try again. As a result, the H alpha image shows more detail than when I tried to add color. |
| SH2-136Sh2-136/AKA GN 21.15.8 is often known as the "Ghost Nebula" for obvious reasons. It is also known as vdB 141. It is a reflection nebula with a Bok globule. The region to the right of the head and above the "Ghost's" left arm is LDN 1177. Galaxy Map puts its distance at about 1500 light-years but puts the error bar at +/- 500 light-years. The nebula is located in Cepheus about 1.3 degrees east of the Iris Nebula. To display the "ghost" rightside up I am posting this one with south up rather than my normal north at the top. |
| SH2-140Sh2-140 is an emission nebula in Cepheus. One distance estimate I found puts it about 2900 light-years from us. The illuminating star is the brightest one in my image a bit to the lower right of center. It is actually a double star that my ham handed processing years ago has turned into one big blob. I do need to reprocess this one. The star is HD 211880. It has a mass of about 35 suns. SIMBAD shows it as a B0.5V star. Oddly SIMBAD classifies this object as an open cluster rather than an emission nebula. Most images of this nebula are done using narrow band filters though I used pure RGB for it. |
| SH2-146Sh2-146/LBN 514 is a "small" emission nebula in east-central Cepheus just below Iota. Galaxy map puts it nearly 18,000 light years distant and 19 light-years across. That source says it is "lit" by the ultraviolet light of a heavily obscured O7 star. I'm not sure which one it is. A strong dust lane does cut it into two parts. The whole field seems obscured, especially to the east. The star count rises rapidly to the west side of my image. There's a faint hint of dust in the star poor area in my raw FITS images but it is too noisy to bring out. Conditions were poor when I took this. I tried to compensate with a lot more time but it didn't help much if at all. It just seemed to add to the halos around the stars. |
| SH2-147The region of SH2-147, SH2-148, SH2-149, SH2-152 and SH2-153 form the 2 cores of the 105 thousand solar mass molecular cloud [UUT2000] Cloud A according to galaxymap.org. Though their image of SH2-147 is the wrong nebula. I'd imaged SH2-152 back in 2008 I'd not realized I could have included all these other objects as well. So I reimaged the area in September 2010 then somehow forgot about it. In yet another sweep of the hard drive, it showed up. So this is yet another long-lost image I didn't realize I had. I found a second lost object but it had too poor red and green data so I know why it never got processed but it also never got back on the to-do list either so it sat in limbo as well. |
| SH2-152Sh2-152 is the bright nebula in the image. To its southeast is the larger but much fainter Sh2-153. The two are considered to be part of the same cloud with a mass of 105,000 suns. Some sources put it at about 15,300 light-years distant. Both parts are considered to be ionized by the unnamed O9 stars in Sh2-152. |
| SH2-156Sh2-156 is also IC 1470. Galaxy Map is normally a good source for info on these but it seems confused. It gives a distance of precisely 4891 parsecs (15,300 light years) then says it is estimated to be 3500 to 4000 parsecs away (11,400 to 13000 light years). Then goes on to say it is part of the star cluster NGC 7510. Huh? The cluster is about 8 tenths of a degree northeast of the nebula and about 10,000 light years distant. Parts of Sharpless 2-157 (8000 lightyears) do extend into the field with NGC 7510 but certainly, Sh2-156 does not. Related Designations for SH2-156SH2-156, IC1470, IC 1470, 2MASX J23050983+6014560, 87GB 230304.2+595825, 87GB[BWE91] 2303+5958, [WB92] 2303+5958, NVSS J230510+601438, TXS 2303+599, [ZHB90] G110.109+00.047, [KC97] G110.1+00.0, [GMT2008] IR 23030, |
| SH2-157Sh2-157 is a rather bright but small emission nebula in a huge but very faint emission complex covering several square degrees of sky known as the Linds 11 group. It is located up near M52 and NGC 7510. In fact, part of the Linds 11 group reaches nearly to NGC 7510. Since it is far larger than my field I centered on the brightest portion sometimes known as Sh2-157b and LBN537. The nebula is estimated to be about 8,000 to 11,000 light years distant depending on which source you use. It is thought to be in the Perseus arm of our galaxy. It is located on the Cepheus-Cassiopeia border which runs through the western third of the image. |
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