The ingress of epsilon Aurigae is proceeding on schedule. While near a full Moon not too far from the star system, I was able to get good photometric data with...
Des Loughney created a paper for the British Asstronomical Association and has kindly agreed to let me post it for the list. If you are interested in DSLR...
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FrankJ12@...
Dec 2, 2009 6:44 am
In a message dated 12/1/2009 9:03:04 P.M. Eastern Standard Time, phxjeff@... writes: Des Loughney created a paper for the British Asstronomical...
Hello, Ours is a group of 5-6 teachers doing photoelectric photometry of Variable Stars, using 12" Meade  LX 200 with upgraded SSP 3A with UBVRI filters.We...
Hi. I got a good value for epsilon Aurigae last night despite the full moon. 2009-12-01/02 JD2455167.2944 3.516V SD: 0.019 Thomas Karlsson Varberg, Sweden...
Hello Dr. Kurtadikar, I assume you have the classic LX200. I have circuit diagrams for the GPS, but I think the Classic is different. The capacitor is probably...
Hi Thomas, Thanks for the data. That is very close to what most others are getting. Good work. Jeff Hopkins Phoenix Observatory Phoenix, Arizona Counting...
As we approach 2nd contact I thought I would run my HPO UBV data through the linear regression programs and see what comes out as 1st and 2nd Contact...
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FrankJ12@...
Dec 3, 2009 7:29 pm
Thanks Jeff! Frank J M ... From: Jeff Hopkins <phxjeff@...> To: EpsilonAurigae@yahoogroups.com Sent: Thu, Dec 3, 2009 1:23 pm Subject: [EpsilonAurigae]...
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FrankJ12@...
Dec 4, 2009 2:23 pm
All - I did some photometry of Epsilon Aurigae on December 4th at 5:00 UT. I came up with an average +3.53 magnitude in V light. Wow! That's sort of a big drop...
Hi Frank, Your data is close to mine and others. Last night I got V= 3.5509 0.0080. I think the out-of-eclipse phenomena caused data last week to jump and now...
Bob Stencel writes: Our favorite stars are seen near Mt.Everest in today's APOD: http://apod.nasa.gov/apod/ap091205.html Jeff Hopkins Phoenix Observatory ...
I have just updated the V band photometric data composite plot on the Campaign Web Site. See: http://www.hposoft.com/Plots09/VFall09.jpg Jeff Hopkins Phoenix...
Richard Miles sent me the following: Here we go - Night No.50 = December 3/4 - another exceptionally clear observing run permitting high precision and a...
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thierry garrel
gabalou@...
Dec 7, 2009 10:33 am
Wonderful ! It seems that it was taken during out of eclipse phase, isn't it ? Babak Tafreshy is definetly one of the best astro artist. Thierry Garrel ...
Does anyone have a H-band estimate for 2009Nov 2-4 and 2009Dec 2-4? We need it to calibrate the flux in the CHARA observations of eps Aur. I've already got...
Hi Brian, I think Brian might be your only chance. I posted my November/December UBV data here on 6 Dec. It has been cloudy and stormy since. Jeff Hopkins...
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phxjeffx@...
Dec 8, 2009 2:31 am
Hi Brian, I knew that would get you involved and the debate may prove very fruitful. Thanks for chiming in. I hope you don't mine that I have added the...
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phxjeffx@...
Dec 8, 2009 5:29 am
I don't know, but thse sure look like radial pulsations to me. Jeff ... From: Robin Leadbeater <robin@...> To: phxjeffx@... Cc:...
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Robert Stencel
coloida@...
Dec 8, 2009 4:36 pm
Perhaps instead of referring to Non-radial pulsations, it might be useful to talk about the "order" of pulsation - with lowest order being simple 'radial'...
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Robert Stencel
coloida@...
Dec 8, 2009 4:43 pm
Thierry, The caption on the apod image implies the observation was in late November 2009, and eps Aur was definitely well into eclipse V ~3.4 at that point. ...
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phxjeffx@...
Dec 8, 2009 4:55 pm
Hi Bob, Perhaps I misunderstood Brian. To me radial pulsations are those where the radius changes. The annimation Robin sent has the objects radius changing,...
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Robert Stencel
coloida@...
Dec 8, 2009 6:08 pm
Brightness depends strongly on temperature, so hotter areas "usually when smaller radius" would shine more brightly. p.s. see Jeff's newest paper on ring...
Hi Bob, Thanks for the plug. It was me and several dozen other observers. It was a project similar to the Epsilon AUrigae Campaign except much shorter. ...
Robin Leadbeater has provided a graph of his K I region spectroscopic data equivalent width (EW) versus time with my U band photometric data superimposed. EW...
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FrankJ12@...
Dec 11, 2009 6:32 am
All - I did some photometry of Epsilon Aurigae on December 11th at 5:00 UT. I came up with an average of +3.57 V magnitude. Jeff - I will send you the data...
Hi Frank, Thanks. Other have reported V nudging 3.6 . A few more weeks and it should be hitting second contact around 3.7+. Good work! Jeff Hopkins Phoenix...
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thierry garrel
gabalou@...
Dec 11, 2009 7:57 am
Hi all, here you'll find summary of my observations in Ha, R=17000. Sprectrum are from level 1c (http://astrosurf.com/aras/data_products_en/def.htm). What is ...
The ingress seems to have hit another bump. This is seen largest in the shorter wavelengths. Here is my data for the last several observations. UT Date RJD...
