30 March 2007

30 March 2007

Observing LocationVP
Observational Period1015-1030 EDT
Atmospheric Conditions
Cloud CoverScattered Clouds
but thin cirrus
Temperature48°F
WindCalm
HumidityLow
Feels LikeCool but pleasant

The sky was very hazy, not what the weather service is reporting.

TransparencyGood
SeeingII
Instruments Canon 15x50 IS binocular w/Baader AstroSolar filter film - Charlie
Observing PartyCharlie Ridgway

Target Sunspots
ConstellationPsc
CategorySolar
Time
yyyymmdd.hhmm
20070330.1015 EDT
Comments
Distance
Light Time
0.998621 AU
8ms
Angular Size32'
Altitude52.50°
Heliographic Latitude
(B0)
-6.64°
Heliographic Longitude
(L0)
11.73°
Position Angle
(P)
-26.7°
Carrington rotation number
(CR)
2054

Heavens Above says group 949 is still there but even on their big picture it is a tiny dot that I can’t tell anything about. It is too small for me to see it.

 Groups SpotsR
North0 0 0
South0 0 0
Total0 0 0
R = (Groups * 10) + Spots)



Observing LocationTotL
Observational Period2115-0115 EDT
Atmospheric Conditions
Cloud CoverScattered Clouds to Clear
Temperature50°F
Wind
HumidityLow
Feels LikeMild

It wasn’t a great night tonight. The cloud cover was very variable.
When I left Manhattan it was overcast. By the time I got home it was mostly clear. I ran upstairs and got into warm clothes and grabbed gear and by the time I got back downstairs the Moon was behind light cloud but there was clear sky out to the west. When I got onto the subway platform the Moon was barely visible behind the clouds.
TotL was a little better. It started out as scattered clouds that got dense a couple of times but then cleared off shortly before curfew.

TransparencyGood to Fair
SeeingII
Instruments Canon 15x50 IS binocular - Charlie
Takahashi 102 refractor - Peter
Observing PartyCharlie Ridgway
Peter Tagatac
Kin Lee

TargetMoon
ConstellationLeo
CategoryLunar
Time
yyyymmdd.hhmm
20070330.2115 EDT
Comments
Lunation
PhaseWaxing Gibbous
Age11.94d
Distance
Light Time
(from earth)
398,745 km
s
Elongation°
% Illuminated93.7%
Magnitude-12.59
Angular Size29.97'
Altitude47.44°
The Moon has moved away from M44, from Saturn, and from Regulus and is now below the belly of the lion. It looks nice with bright Regulus and Saturn about equally spaced off to its right.

Stary Night Starter graphic

Looking in Peter’s telescope there appeared to be less contrast than what I had in my binocular. I noticed last night also that there was a lack of contrast. I am thinking it might be a factor of magnification.

I could not see the Alpine Valley at all. I saw the Montes Archimedes but not Palus Putredinis.

Over by Aristarchus Peter introduced me to the Cobra Head, a combination of the crater Heroditus and Vallis Schroter. I didn’t see it as a cobra head and Vallis Schroter looked more like a drowned crater than a valley.


Virtual Moon Atlas graphic

The rays of Kepler were much more distinct tonight as were those of Copernicus and Tycho. There is a long ray from Tycho that heads up towards Mare Serenitatis that seems to be described going through the mare into Lacus Sominorum but it looks like two different rays to me. The one from Tycho appears to go west of Mare Serenitatis and the one in the mare appears to eminate around Bessel and goes in opposite directions from there.

Gassendi was harder to see tonight but I found it after looking hard. Mersenius was there also and together they looked like a pair of Mickey Mouse ears on Mare Humorum.

Up at the north Endymion and (probably) Lacus Spei looked dark.


Virtual Moon Atlas graphic

Most of the craters in the center of the disc were very bright.

TargetSaturn
ConstellationLeo
CategoryPlanet
Time
yyyymmdd.hhmm
20070330.22## EDT
Comments
Object
Class
Classical Planet
Elongation°
Distance
Light Time
(from Earth)
AU
hm
Distance
(from Sun)
Au
Angular Size"x"
Ring
Angular
Size
"x"
Ring
Inclination
°
Magnitude0.21
Altitude19.67°

Starry Night Starter graphic
I could see two moons in my binocular and three or four in Peter’s scope.

TargetM42, Orion Nebula
ConstellationOri
CategoryDSO: EmNeb
Time
yyyymmdd.hhmm
20070330.22## EDT
CommentsThere was hardly any nebulosity visible at all.

TargetM35,NGC 2168
ConstellationHer
CategoryDSO: GCl
Time
yyyymmdd.hhmm
20070330.22## EDT
CommentsThe cluster is large. I saw around eight stars. It is hard to know how far out to count them.

TargetM44, The Beehive Cluster, Praesape, NGC 2632
ConstellationCnc
CategoryDSO: OCl
Time
yyyymmdd.hhmm
20070330.23## EDT
CommentsThe Beehive is up in the Times Square gegenschein and I can’t find any landmark stars to locate it. I have to scan around with the hand held binocular and then see what cloud is nearby to locate it with the binoculars on the tripod. The stars look very crisp in spite of the light-pollution and haze of cloud.

TargetM13, Hercules Cluster, NGC 6250
ConstellationHer
CategoryDSO: GCl
Time
yyyymmdd.hhmm
20070330.23## EDT
CommentsM13 was easy to find without even trying. I got η Her in the FoV and started panning toward ζ Her and there it was. With η on the left edge of the FoV M13 is on the right.

TargetM3, NGC 5272
ConstellationCVn
CategoryDSO: GCl
Time
yyyymmdd.hhmm
20070330.24## EDT
CommentsThis one was smaller than M13 but just as easy to see..

TargetM53, NGC 5024
ConstellationCom
CategoryDSO: GCl
Time
yyyymmdd.hhmm
20070330.24## EDT
CommentsI searched for this cluster in my binocular and found the FoV but didn’t see anything there. It was easy to see as a small fuzzy star as part of one of the ubiquitous star triangles in Peter’s scope.

Disclaimer
This is my personal record of my astronomical observations. It was written for my personal reference. The only reason it is in a blog is that a blog is a very convenient way to get the records formatted more or less uniformly and they will, hopefully, have greater longevity at Google where the servers are backed up than on my hard drive which never gets backed up. I occasionally include copyrighted material in my posts. I do this to make it convenient for me to access things I think I might want to refer to again. I think of this like making a photocopy of something I read that I put in a file where I can find it when I want it. As I understand copyright law, as explained in the DVD series Copyright Compliance by Chip Taylor Communications, this use is allowed under the Fair Use doctrine since I am not making any money on this blog, I don’t publicize the blog, and only occasionally post small excerpts of copyrighted works.


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