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PixInsight => General => Off-topic => Topic started by: Luigi on 2011 November 02 12:52:34

Title: Electroluminsecent Panel for Flat Frames
Post by: Luigi on 2011 November 02 12:52:34: Anyone using an electroluminescent panel for flats?

How did you decide the correct size? Currently I have a 152mm refractor, will an 'A4' size panel be sufficiently large? I'm thinking I hang it on one of my observatory walls and point the scope there.
Title: Re: Electroluminsecent Panel for Flat Frames
Post by: pfile on 2011 November 02 13:02:47: yes, recently i started using one. i think the one i bought is A4-sized. i just point up, lay it on top of the objective of my C8 or of my 200mm lens and put a paperback book on top.

i'm not sure how far away you can put such a small panel and still have it work, i have never experimented with it.
Title: Re: Electroluminsecent Panel for Flat Frames
Post by: Luigi on 2011 November 02 14:02:17: Thanks. I suppose I could hang the panel just in front of the dewshield and I'll be OK.

Is a laptop screen a good alternative until I get an ELP?
Title: Re: Electroluminsecent Panel for Flat Frames
Post by: pfile on 2011 November 02 14:04:33: yeah, you could do that. i have heard of people using their laptop screens for this purpose. i've never tried it though.
Title: Re: Electroluminsecent Panel for Flat Frames
Post by: Luigi on 2011 November 02 18:15:58: BTW where did you get yours?
Title: Re: Electroluminsecent Panel for Flat Frames
Post by: chris.bailey on 2011 November 03 05:17:22: I use one of the Gard Newmann ones that are circular. I found the cheaper ones, whilst ok for LRGB, didnt give decent results with narrowband. Since using it I have got flats that actually work!
Title: Re: Electroluminsecent Panel for Flat Frames
Post by: georg.viehoever on 2011 November 03 06:24:00: Quote from: chris.bailey on 2011 November 03 05:17:22
I use one of the Gard Newmann ones that are circular. I found the cheaper ones, whilst ok for LRGB, didnt give decent results with narrowband. Since using it I have got flats that actually work!

You probably mean Gerd Neumann http://www.gerdneumann.net/v2/english/eng_aurora_flatfield_panels.html. Yes, these are good!

Georg
Title: Re: Electroluminsecent Panel for Flat Frames
Post by: chris.bailey on 2011 November 05 11:09:39: Quote from: georg.viehoever on 2011 November 03 06:24:00
Quote from: chris.bailey on 2011 November 03 05:17:22
I use one of the Gard Newmann ones that are circular. I found the cheaper ones, whilst ok for LRGB, didnt give decent results with narrowband. Since using it I have got flats that actually work!

You probably mean Gerd Neumann http://www.gerdneumann.net/v2/english/eng_aurora_flatfield_panels.html. Yes, these are good!

Georg

Darnit, looks like the one I got is a fake :-)
Title: Re: Electroluminsecent Panel for Flat Frames
Post by: Lex on 2011 November 07 07:37:29: Hi,

The ELP's of Gerd Neumann are the best considering the luminance uniformity.
I collect my Flats scope/mount in park position and the ELP fixed to the scope with little magnets. ( not ideal for automated setups )
If you have an automated setup it is possible to use it just like a dome flat, just be sure that there is no direct light source causing reflections on the ELP.

I tried the use of the LapTop screen also with a very non-uniform result ( unless you have a real good LED screen i would not opt for this )
Title: Re: Electroluminsecent Panel for Flat Frames
Post by: pfile on 2011 November 07 10:11:36: Quote from: Star Dog on 2011 November 02 18:15:58
BTW where did you get yours?

well, i just got some el-cheapo one from fleabay (direct from china). you know, because we jam econo over here. i should measure the spectrum and see if it's any good.