NGC 5331 AKA VV 253
RA
13 52 11
DEC
+02 05 55
Virgo
Mag 13.8
Type interaction
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I was observing with Akarsh this week and was looking at my old Uranometria and came across a...
To finish my post, Annie Jump Cannon also discovered several compact emission nebulae (even an extra-galactic PN) in the SMC and LMC on objective prism plates taken at Bloemfontein with the 24-inch...
For the same three Cannon planetaries, here are my notes using an 8" and a 14.5". Cannon 1-1, 1-3 and 1-4 are between -44° and -49° declination, so may be too far south for many here. I have some...
Hello Folks,
here are three sketches from Objects that i visit last August with my 21 inch Dobson. NGC 6207 is a galaxie in the near of M13. NGC 6974 (E) and NGC 6995 (H) are little nebulas in...
Hi, here's my observations of 3 Cannon planetaries : Cannon 3-1 in Ophiuchus ; mag: 13.5 ; size: 6" ; small, round and dim. I used a 4mm Radian at 436x
Cannon 2-1in Scorpius ; mag:12.2 size:2" ;...
Google found three more entries Mark :)
sketch Cn 3-1: 27", 837x, no filter, Seeing II, NELM 7m0+ (Edelweißspitze, Austria)
home
sketch CN 1-5: 28", 843x, , Seeing II-III, NELM 7m5+...
You are correct that these nebulae were discovered by Annie Cannon from objective prism surveys with the 24" in Peru. They were published (in the case of Cn 2-1) in a paper by Harlow Shapley in the...