Hi Richard, If you would like to send your lower profile cell and SA to us we will sort it for you by return post. Regards Bob Paton Hawksley Ltd ... From:...
Hi Bob, thank you very much for your offer, but shipping and taking your time seems unnecessary. I have all the tools necessary, lens ring spanner wrenches,...
Yes, that is a shame as the adjustable slit was very useful for experimentation. It looks the same as that used in many student bench spectrographs which I...
As a matter of interest Richard, how slim do the filters have to be to fit in that drawer? The SA fits in my ATIK wheel ok which I always thought was pretty...
Hi Robin, it's not the SA that's the problem, it's the Astronomik filter drawer and the drawer's very tight threads. I have five 1-1/4" drawers where I tried...
Hi Richard, ... 1/4" ... Now that rings a bell. This might sound bizare but there is a possibility that Astronomik are using the wrong thread. The industry ...
Hi Robin, very interesting and very possible. When I was having trouble inserting my Baader 2" filters in the 2" drawers I emailed Baader about the problem....
Hi Richard, I am not sure which type you have.... we have been improving the filter as we go along so depending on its age it will be more or less robust, but...
I am diabetic and this give me a test to do my seringue maybe can do the job the problem here and for the next day it is snowing about 0.5 meter and no sun ...
I wouldn't use diabetic needles Jacques - be very careful! If the the cylinder reflects effective 360 deg within 1mm diameter shaft and the sun is only 0.5 deg...
... bench spectrographs It is the same exact. which I believe originate from India but I have not been ... Yes India. The same source as the socalled India...
Ken Harrison has compiled a catalogue of all the stars mentioned in Jim Kaler's famous book plus a few other useful stars. He has agreed to let me upload it...
hello, i am dominique hoste, living in belgium, 51 years since a few months i have the star analyser to calibrate mine configuration i take the spectrum of...
Dominique, Excellent! This is also interesting as I observed beta Aurigae for more than a year with a Lhires III in high resolution as this is a nice and ...
Hello Dominique and welcome! Is it possible to upload your spectrum to a folder in the files section so that members who read messages on the web can see it? ...
Hello, by the way, I just made a quick reference guide to easily process Star Analyser spectra. It's only in french for the moment but you can take a look at:...
Hello Dominiek Just out of interest: How did you determine the orange curve for the SA efficiency ? By a spectrophotometric standard star ? Or is it available...
Hi Olivier. It looks good to me. The only other suggestion I have is to remove the sky background/bias while you are in IRIS (very simple now with 4 clicks on...
good morning, thanks for your answers and advice. Olivier, i will take a view to your quick guide as soon as possible: i was supprised to see your name in my...
Robin, excellent point. As I said, this is an easy to use technic, not a very scientifical one. Still, I'm puzzled as we were able to find approximative star...
YES PLEASE somebody in and other group http://tech.groups.yahoo.com/group/digital_astro/ try to find the best filter for these blue nebula and I said maybe we...
I redirect some to the Be star page of Christian and the answer I receive is like this ((((Spectra give only small region, the main color of the stars is blue....
Hi Jacques, Reflection nebulae generally show the spectrum of the illuminating star, but with the red end of spectrum suppressed due to scattering. Also many...
I'm interested in building and using spectroscopes. Already built a couple of classic designs using reflection gratings as well as an WPO littrow. Have also...
Not exactly the same , but I made a "sliding drawer" to take the P-H rectangular gratings with a T thead at either end. You can then change over gratings in...
Hi Ken, always nice to see new group members, welcome. There is a sister , more general, spectroscopy group that you may want to consider joining, see: ...
