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Dave,
I have the Vixen 2.1 excellent BUT you need 2 things good skies and good vision they are not suitable with a spectacle prescription of for example +6.75. They are best used without specs but are adjustable to about +/- 5. The manufacturers don’t bother to tell you !
Do not buy the cheaper version(s).
Jack
Huggins Spectroscopic Observatory UK
Ernst,
Welcome aboard.
I look forward to future collaboration in Spectroscopy.
Regards,
Jack
Essex UK
Ernst,
My baseline of observations start from 2105-08-26 to date, a long term study, I intend to contribute scientifically useful data.
Regards,
Jack
Essex UK
John,
I contacted a Professional astronomer and good friend Professor Steve Shore who has provided the following information which we hope will answer your question.
There is also another document which I can’t upload so will send you an e mail.
http://rredc.nrel.gov/solar/spectra/am1.5/ASTMG173/ASTMG173.html
https://arxiv.org/pdf/1405.4780.pdf
http://adsabs.harvard.edu/abs/2010A&A…523A..57V
Regards,
Jack
Huggins Spectroscopic Observatory UK
Andy,
I will check the FITS header fields.
Just checked MaximDL and its definitely a FITS file all saved as .fit files.
The bias dark and flat field processing were followed in accordance with John Blackwells tutorials.
Regards,
Jack
Andy,
That is what I am trying to do.
I have uploaded the error message for people to look at.
This afternoon I am MaximDL training.
Regards,
Jack
Thanks Tony for the housekeeping tips.
I have just bias_dark_flat field corrected my spectrum of p cyg but it won’t open in BASS the following error comes up.
Anybody know how to fix this ?
Regards,
Jack
Andy,
My understanding of calibration is a neon lamp as I own a Lhires III.
Do you mean John is rewriting BASS calibration to include bias-dark-flat field corrections ?
By calibration frames do you mean bias-dark-flat frames ?
The ccd temp was set to -5 c as told by an experienced amateur consequently all spectra taken so far are at that temperature.
Regards,
Jack
David,
Yes.
Thank you for your explanation.
I now understand that it is visible to others but not to me !
Regards,
Jack
Thank you all for your replies.
The Atik 460 is cooled to -5 c is that OK ?
I will read through the BASS project user guide to see if I can create a master dark frame.
I assume the same procedure applies to flats and that I need to take a set say 10 after each observing run. ?
My Lhires II has a built in flat lamp.
Regards,
Jack
Huggins Spectroscopic Observatory UK
A group photo taken by Janice through my camera.