Hi all, I recently purchased a Star Analyser and have taken some images. I'm a little confused about what I'm seeing. Here are some lightly processed images...
Hi Mark, Congratulations on your first spectra :-) The part of the spectrum to the right of the red is all in the Infra Red (The red green and blue filters in...
Hi Robin, Thinking about it makes perfect sense - I couldn't for the life of me work out why what I saw in the eyepiece looked different from the CCD image!...
Nice start Mark - well done! Just a minor item to Robin's excellent tutorial. I've found if the colour saturation is too high it also tends to mask the...
Give me some guidance here guys :-) Am I on the right track? Per Robin's suggestion I managed to get a spectrum of Betelgeuse later on this evening. Here's...
Mark, Betelgeuse is not an easy one as there are so many lines... Try a "simplier" star first: "A" class star such as Vega for exemple or Sirius in the Winter...
Hi Mark, Yep that is the right one. :-) As Olivier says, Vega will give you a better calibration which you can use for other observations provided your setup...
Hi Olivier, This is something I have ignored up to now but I need to find out more about. It came up concerning the measurements I made of the possible ...
Hi Jeff, Ah, so that is how air mass is calculated. Thanks for that. Visual Spec can calculate the air mass and this can then be entered to correct the...
Well I tried out the correction in Vspec and it seems to be mulitplying by the factor instead of dividing to me. The flux appears to be higher after...
Hello Robin, The air mass calculation is straight forward. Extinction is another issue. Extinction is indeed wavelength dependent. It is great in the shorter ...
Please ignore the previous post. Of course the flux will be higher as Vspec is correcting a profile which is assumed to have extinction. The effect is greater...
Sorry for the delay I am out of circulation from the 8 of october and accident put me in the hospital from this time a broken leg;in multiple part and a broken...
Hi Jaques, Welcome back and sorry to hear about your accident. It sounds very nasty. I wish you a full and speedy recovery. Best wishes Robin ... side ... ...
Well this star is now back to pre event brightness and I managed to get some more spectra including one a couple of nights ago. They are all essentially...
Has any here had a problem posting their processed jpegs (spectra) to Yahoo? We get a message "unsupported image file" ? So far as anyone knows our files are...
Hi Jerry, Can't say I have noticed a problem. One thought - do they have the file extension .jpg or .jpeg. I have a program which is happy with .jpg but will...
it is possible to see the comet in day time in nrth america for the moment in south it is the best place ok BUT 1-if you place you in the shadow of the sun 2-...
Hi Jack, The comet is way below the horizon now from the UK even in daylight. It might be possible to get a spectrum in a bright daylight sky. A setup using a...
Hi, As a new member of group I tried star analyser filter, took some images about their spectra and combined them in a single frame. You can see the image in...
some new camera have pixel of 2.8 micron and the other average at 10 micron dos this can change somthing in our experiment waht do you thing about that jacques...
Hi Jacques, The Star Analyser will work fine with any pixel size camera. In general for astro work it is good to try to match the pixel size to the seeing and...
Hi Mehemet, I can see some Hydrogen Balmer lines in Sirius and both show the atmospheric line in the red very clearly. Have you tried Betelgeuse? It shows some...
Hello, AO Psc is a cataclysmic system, ie a binary with an accreting white dwarf. The orbital period is Porb=4h. The white dwarf has a strong magnetic field ...
Hello Michel, That is a very interesting system you are studying there and an unusual use for the Star Analyser too. Mag 14.8 is rather faint for amateur...
Hello, I am sorry and confused, but please ignore my previous post: I just realize that there is a background star (R=16.5 in the USNO-A catalog) overlaid with...
Robin, I use MaximDL to stack the images, to rotate the resulting image so as the spectrum is horizontal and to output a CSV file from a line profile; I input...
Having problems with message search?
Fill out this form to ensure your group is one of the first to be migrated to the new message search system.
