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Hi Rob,
Though it is good to see you having a go, I'd be very, very surprised if you manage to see any of these in your last post. For the record here are some observations of them using a variety of apertures from 10 to 18". They were all made from either good rural sites with a ZLM of about 6.2, and some at an excellent site with a ZLM of about 6.5.
Rup 106 (10")
x86 34' TF. x171 17' TF. Not a particularly difficult object. Found in a field of nearly innumerable *s, 2 deg S of Gamma Centauri. Appears as an unresolved fairly sizable milky glow perhaps 2.5' diameter. Seems to have several faint superimposition *s about mag 14. Mag 9 * to the S by 3'. Scattered mag 13-14 *s like the sands of the beach.
Rup 106 (18")
x111 45' TF
x139 56' TF
Ru 106 Globular Cluster
RA: 12h 38m 40.2s Dec: -51° 09' 01"
Mag: 10.9 Mag V(tip): 14.8 Mag V(HB): 17.8
B-V (tip): --- Size: 2.0' Class:
R.V.: --- Source: Archinal *
This cluster is quite close to a mag 9*, 3' away to the S as a quite diffuse, hazy, galaxy-like looking object perhaps 2.0 -2.5' diameter with several faint stars scattered over the top. These may be resolved *s but are just as likely field stars at about mag 14.5. Appears to brighten broadly and slightly to centre without core or pip, 3' diameter hazy, background does not seem granular. Profusely littered field.
E3 (18")
x185 27' TF x247 20' TF
E 3 Globular Cluster *
RA: 09h 20m 59.3s Dec: -77° 16' 57"
Mag: 11.4 Mag V(tip): --- Mag V(HB): ---
B-V (tip): --- Size: --- Class: R.V.: ---
Source: Archinal
A quite faint GC but looks differrent at lest from my memory of in in the 31cm (no specific notes on this) quite faint pointed at from the E by 2 *s, mags 10 & 8 the closest is the latter 13' away E. A large 2.5' diameter diffuse and weakly grannular glow of lowish SB with a few (apparent superimposition *s) faint *s virtually no concentration to centre. No apparent resolution. Ragged edges. Nicely populated field considering it is Chamaeleon.
E3 (20")
x277 18' TF. Mag 11.5 Size 5'. Not difficult at all, indeed this object was discovered to be visible even in my own 31cm a short time later. To the W of a mag 7.5 * by 15', Appears perhaps slightly elongated roughly N-S, 1.5' x 1.2' with a moderate broad concentration to the cetnre with no evidence of resolution . Est cc 9-10. An easy D.V target in 50cm, It can be held steadily though it is very faint in 31cm with A.V at x186.
Pal 12 (10")
x181 17' TF. Mag 11.7 Size 2.7'. Found to the N of a small group of 3 *s in a Tri + 1 about mag 13.5. Very faint but not invisible, though it is barely detectable with D.V. Quite small looking like a weakly concentrated eliptical type eg. Weak to slight broad central brightening. No resolution, est cc 10.
Hope this helps,
Les D
Contributing Editor
Australian Sky & Telescope
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