... It is as useful as it has ever been... Just a few thoughts: What would we want a "sky meter" for? One obvious thing is for rating different observation...
... I think the greatest value of this instrument is for comparing the level of light pollution at sites that you haven't seen to ones that you're familiar...
I'm also finding it useful in measuring some "intermediate" sites that are brighter than Mount Pinos (21.3-21.4), but darker than my home(17.5- 17.8). My...
Here are more observations of the NGC 6962 group in Aquarius (including a couple of faint double stars that mistakenly made their way into the NGC) from the...
Hi Bill, Steve and All, And here are my observations of the NGC 6962 group using 31cm. I missed the PGC eg and -63 + -66 which are double *s Steve describes...
We discussed this extensively at the time of the Venus transit. Recently I've seen the red/blue fringe on Mars when low. But I don't recall any mention of why...
... It's probably too small an angle to be noticed by the unaided eye. It's on the order of 10 or 20 arcseconds near the horizon, isn't it? Another thing is...
Hi Greg, I have seen this effect many times while observing a rising, waning gibbous moon, using my old orange C-8 and a 32 mm erfle from Navaho flats. It...
Kent Wallace
kwwallace@...
Sep 2, 2005 7:09 pm
16262
To Brian Tung's earlier point, and Kent's post below, the terminator is sharply lit enough to see many 'green flashes' as individual sunlit features emerge...
Well I have no comment about the "green flash effect" on the terminator, don't know about it, but I would have to say pretty emphatically that the lime green...
Greg N. wrote:> ... I have only seen lateral color as a blue fringe around bright objects. The green flash effect I described is real, and has the same...
A couple weeks ago I said I would look up some differential photometry I did of two companions to Vega. I have finally remembered to do so: the data (along...
Brian Skiff
brian.skiff@...
Sep 4, 2005 1:38 am
16266
I just got back from the Black Forest Star Party, where among other things I looked at the stuff in Sue French's Sept. and Oct. S&T columns. Everything was...
I've heard about this object for years. I have looked at it in binoculars, I have looked at it in a finder. I have looked at in binoculars with OIII and I...
Last night I was using my 4" refractor and left the C14 un-set-up. I have visited M76 many times in the 14". I started at Mirfak with a 40mm 4.25" eyepiece in...
1. Is the moon "green flash" one of those things where you have to log 1000 hours of viewing to get one glimpse? 2. This lateral color thing is a mystery and I...
Following the discussion Brian Skiff and I had a few weeks ago about estimating sky transparency, I did some tests during my observing run this month. The aim...
... Since Greg is somewhere near Albany, New York, I looked up the twice-daily weather-balloon soundings to see what level of precipitable water-vapor was...
Brian Skiff
brian.skiff@...
Sep 6, 2005 12:48 am
16272
When I tried looking for Neptune naked-eye earlier in the (northern) summer, my limit close to the planet (Dec -16, and thus sec z = about 1.6 when on the...
Brian Skiff
brian.skiff@...
Sep 6, 2005 12:55 am
16273
Messier did it because the skies back then were darker. Even in the city of Paris it was darker. Keith ... From: "gnowellsct" <tim71pos@...> To:...
Keith Burns
keith_B@...
Sep 6, 2005 1:07 am
16274
... How would you describe the sky quality on that night, Brian? I wouldn't have expected an 0.6 mag difference between zenith and 40 deg for your skies at...
Hi Greg, Not sure about the fuzzy patch. But i checked my notes and i have seen M76 through my mag 4.5 backyard skies in my Tele Vue 76. I've not been able to...
It was a 'standard' photometric night, with aerosols a bit up as is common in June/July. If the recent SQM readings are any guide, the sky would have been mag...
Brian Skiff
brian.skiff@...
Sep 6, 2005 2:25 am
16277
... Probably pretty dark but also very sooty/smoky. Messier also used some Gregorian telescopes that were something like 15 or 17cm aperture, and probably at...
Brian Skiff
brian.skiff@...
Sep 6, 2005 2:32 am
16278
It took me 4 years to find and draw all 15 Palomar Globular clusters. I used a 16" F5 scope and only found them in very good sky conditions. After many...
I have seen M76 quite easily with my 18x50 IS binoculars. Maybe the fuzzy patch was the asterism Karhula 1? :-) /Timo Karhula ... seen M76 through my mag 4.5...
... I'm not a telescope expert, but I did read a rather extensive book on the history of telescopes (I'll look up the title when I get back home tonight)....
Hi Greg, ... Last year while in the South of France I saw the North America Nebula for the first time with certainty in my life. I used binoculairs. Earlier...
Hi guys, Last night proved to be such an excellent night that I'd like to share some of my observations with this group. All observations were done with my 6"...
