In addition to the 29 NGC open clusters discussed last time, there are an additional 7 NGC objects in Cassiopeia.
eg 0147: 13'.2 x 7'.8: Visual 9.4; Sur. br. 14.5: This whale-sized galaxy was viewed on several occasions, along with its neighbour 185. Both are part of the Andromeda Family. At 43x, 147 is oval and enormous, lying amidst a rich star field. Dark skies and adapted eyes are requirements for good sightings. At 59x it shows an inner oval area brighter than the outer area of haze. 100x shows the object well, including 3 *s within. At 125x mostly the brighter central area was only seen. This is a faint object, so wait for good skies, and be patient. It is not a problem for an 8" or a 12".
eg 0185: 8' x 7': Vis. 9.3; Sur. br. 13.7: Much easier to view than its near companion 147, then both fit into my 43x field of view. Quite bright and somewhat oval. Averted vision shows the full extent of this very large galaxy, with a few *s involved.
eg 0278: 2'.1 x 2': Vis. 10.7; Sur. br. 12.1: Despite being a poor night for galaxies (lots of dew) the galaxy was large and bright at 60x. It appeared slightly oval. Central core much brighter at 150x. Good object for 6" scopes, too.
gn 0281: 35' x 30': This emission nebula was seen well at 60x with an Orion Skyglow filter. It is very large, with some areas showing more brightness. 100x also shows it well.
gn 0896: 10' x 10': Emission nebula, paired with IC 1795. Both seen at 60x with the Skyglow filter. Two distinct patches of very faint nebula, they were like seeing galaxies. 896 is brighter, with 2 faint *s north, IC 1795 is involved with a 9 mag. *.
eg 1343: 2'.6 x 1'.6: Vis. 12.8; Sur. br. 14.2: Located at 125x and also observed at 150x and 200x. Very faint overall, though it had a brighter and wider middle. Elongated, with 2 faint *s following.
gn 7635: 15' x 8': The "Bubble" Nebula isn't much to look at with a telescope, even with a nebula filter. One star sits within it, at mag. 8.5. Attached to and north of this star is some wispy gas. Magnificent area for sweeping, and close to M 52.
Cassiopeia has several noteworthy IC objects. I observed all the ones listed in Uranometria 2000, ten in all.
eg IC 0010: 6'.4 x 5'.3: Vis. 11.2; Sur. br. 14.9: Located with just a bit of trouble, the galaxy was seen tonight at 60x and 100x, just north following variable * TV and its wide companion. The galaxy was large, faint and oval. A * was seen near the center, and other *s were also involved with the haze.
gn IC 0059: 10' x 5': This was seen as a fairly solid block of nebulosity, large and especially noteworthy near a faint circlet of *s. It was seen with and without the filter.
gn IC 0063: 10' x 3': Separate from IC 59, and seen as more clumpy. Just as faint as its companion.
oc IC 0166: 8'. Br. * mag. 17: Immediately preceding a mag. 9 * lies a cloud of extremely faint haze. Not large, but appears to be very dense. A few *s resolved at 200x. Well beyond what a 12" mirror can resolve. However, I have seen it now with a friend's 22". Still hard to resolve, but doable.
pn IC 0289: 48"; Vis. mag. 13.2; Cent. * 15.9: Located at 60x and 120x with the filter, good views were had up to 250x. It is round, large and ghostly and faint. No detail can be seen.
pn IC 0289: 48"; Vis. mag. 13.2; Cent. * 15.9: Located at 60x and 120x with the filter, good views were had up to 250x. It is round, large and ghostly and faint. No detail can be seen.
oc IC 1590: 4'. Br. * mag. 9: The cluster is within gn 281. At 100x the brightest * in the nebual is a close triple system. Up to 200x was used to see a few very faint stars around it, plus several brighter ones.
pn IC 1747: 19"; Mag. 12; Cent. * mag. 15.4: Spotted at 100x, it was medium bright, round, small but very distinct. Viewed up to 250x with a nebula filter.
gn IC 1795: 40' x 20': See abstract for ngc 896, above.
oc IC 1805: 20'. Br. * mag. 7.9: Though hardly a showpiece, it is a large, fine group with many bright members. 60x and 100x were used, with 100x showing an inner circlet of *s in the center quite well. This central ring gives the cluster its main interest and uniqueness. Very faint nebulosity could be seen using the Skyglow filter.
oc IC 1848: 18'. Vis. mag. 6.5: A wonderful cluster at 60x, with 2 bright *s in the very center. The brightest one has 3 faint companions. The 2nd brightest * has about 10!. 125x resolves the cluster, a very large group with several bright *s and many faint ones. Though a rich group, it is scattered. 60x and 83x shows the group well. With a Skyglow filter there is some faint, thin and wispy nebula. Recommended.
In the third part of my Cassiopeia review I will take a look at the many non-NGC/IC objects in that constellation. To be continued...
Mapman Mike
oc IC 1848: 18'. Vis. mag. 6.5: A wonderful cluster at 60x, with 2 bright *s in the very center. The brightest one has 3 faint companions. The 2nd brightest * has about 10!. 125x resolves the cluster, a very large group with several bright *s and many faint ones. Though a rich group, it is scattered. 60x and 83x shows the group well. With a Skyglow filter there is some faint, thin and wispy nebula. Recommended.
In the third part of my Cassiopeia review I will take a look at the many non-NGC/IC objects in that constellation. To be continued...
Mapman Mike
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