Quote:
Originally Posted by Tinderboxsky
It has been two years since I last observed this triple double. I have since moved closer to Hobart and and I was interested to see if the slight increase in light pollution would make a difference. It was a good night with well above average seeing and highly transparent skies.
I was able to resolve all three doubles at 160X magnification, as was the case two years ago.
149901 - near equal pair, easily split.
15004 - faint companion showing as clear and distinct pin prick of light.
150083 - most difficult of the three given mag difference and 1.9" separation, but the companion was clearly visible. Notes and recollection suggests this was more difficult than my observation two years ago.
It is an enjoyable view with all three doubles visible and resolved in the same field of view.
Vixen NA140SS with 5mm LVW giving 160X, 0.9mm exit pupil and 24 arc min FOV.
|
Thanks to you guys for posting this and other targets to keep the motivational juices flowing. Tried these last night under Bortle 5 skies. Agreeing with Tinderboxsky, 149901 was an easy split. 150040 was much harder, needing to get to 255x to determine the faint companion. 150083 was virtually impossible - was trying with a Nagler 3-6 zoom with my 8" dob, and at 300x I could only just detect there was something other than a single light source - certainly no separation though, and obviously not a chance of resolving all three in the same field of view. Maybe a challenge for darker skies/better seeing/bigger scope. Keep up the good work!