[Mr Jack Martin]

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

[Mr Jack Martin]

A group photo taken by Janice through my camera.

Regards,

Jack

Huggins Spectroscopic Observatory

[Mr Jack Martin]

Ernst,

Its rewarding to see my observations included.

More to follow.

Regards,

Jack

Essex UK

[Mr Jack Martin]

Ernst,

I can also provide baseline observations from 2015-08-26.

Regards,

Jack

Essex UK

[Mr Jack Martin]

Ernst,

Yes OK I will send this observation next week.

Regards,

Jack

Essex UK

[Mr Jack Martin]

Ernst,

My last observation was on 2017-04-01.

Regards,

Jack

Essex UK

[Mr Jack Martin]

Ernst,

Welcome aboard.

I look forward to future collaboration in Spectroscopy.

Regards,

Jack

Essex UK

[Mr Jack Martin]

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 

[Mr Jack Martin]

John,

The 4th document has uploaded successfully.

Jack

Huggins Spectroscopic Observatory UK

[Mr Jack Martin]

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

[Mr Jack Martin]

Peter,

Good work, as always.

Jack

[Mr Jack Martin]

Tony,

I will bear that in mind.

Thanks,

Jack

[Mr Jack Martin]

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

[Mr Jack Martin]

Error message uploaded.

[Mr Jack Martin]

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 

[Mr Jack Martin]

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

[Mr Jack Martin]

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

[Mr Jack Martin]

David,

Yes.

Thank you for your explanation.

I now understand that it is visible to others but not to me !

Regards,

Jack

[Mr Jack Martin]

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

[Mr Jack Martin]

Andy,

Thank you for you step by step reply.

This information does not appear to be available from Celestron when looking at the C14 specs or anywhere else.

Regards,

Jack

Huggins Spectroscopic Observatory UK

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