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Messages 5588 - 5617 of 7215   Oldest  |  < Older  |  Newer >  |  Newest
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5588
What on earth makes you think that narrowband imaging is mainstream? Cheers Jon ... From: Richard Crisp To: ccd-imaging-technology@yahoogroups.com ;...
john walton
john54946
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Aug 1, 2007
7:07 am
5589
... Probably because Ha = narrow band and everyone has an Ha filter ? Bill -- William R. Mattil : http://www.celestial-images.com...
William R. Mattil
data_god
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Aug 1, 2007
11:29 am
5590
... From: William R. Mattil To: narrowbandimaging@yahoogroups.com Sent: Wednesday, August 01, 2007 4:28 AM Subject: Re: [NBI] Possibly OT but likely to be of...
Richard Crisp
rdcrisp
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Aug 1, 2007
2:25 pm
5591
OK I accept I was wrong --- "mainstream" is a relative term. Can you recommend a good book or DVD or course or website tutorial. Cheers Jon ... From: Richard...
john walton
john54946
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Aug 1, 2007
7:41 pm
5592
what topic do you seek the book or DVD to cover John? john walton <johnvwalton@...> wrote: OK I accept I was wrong --- "mainstream" is a relative...
Richard Crisp
rdcrisp
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Aug 1, 2007
7:53 pm
5593
Mainstream narrowband imaging Say SII, Ha, OIII mapped color Cheers Jon ... From: Richard Crisp To: narrowbandimaging@yahoogroups.com Sent: Wednesday, August...
john walton
john54946
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Aug 1, 2007
9:12 pm
5594
I had an article in the Aug 2005 S&T on the topic I guess I need to do more writing.... john walton <johnvwalton@...> wrote: Mainstream narrowband...
Richard Crisp
rdcrisp
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Aug 1, 2007
9:31 pm
5595
I do quite well self-guiding through an Ha filter. Of course I use a wider, 13nm Astronomik filter but my sky is reasonable dark so I don't really need the...
Photon Collector
photoncollec...
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Aug 2, 2007
12:59 am
5596
to be clear I am not saying it is impossible to do, but it is another hurdle that is put up and I don't see much gain in having it. the wider the FOV the...
Richard Crisp
rdcrisp
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Aug 2, 2007
1:54 am
5597
That would be brilliant! Also you could make some dough. ... From: Richard Crisp To: narrowbandimaging@yahoogroups.com Sent: Wednesday, August 01, 2007 10:30...
john walton
john54946
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Aug 2, 2007
5:56 am
5598
Hi Michael, I just came across your post in the archive on using a Synta achromatic scope for narrowband imaging. Your post is very significant for the...
ssb73q
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Aug 2, 2007
11:46 pm
5599
it has been my position for years that one doesn't need color correction to image narrowband: you are using one wavelength at a time you may find a small...
Richard Crisp
rdcrisp
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Aug 3, 2007
12:55 am
5600
Hi Richard, Michael's comment about red halos is also interesting. I have a "feeling" the red halos (any color halos) with APOs is filter IR or UV leakage....
ssb73q
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Aug 3, 2007
11:39 am
5601
there can be sensor issues that can cause NIR images to appear to be out of focus no matter how good the optics are. specifically what can happen is that the...
Richard Crisp
rdcrisp
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Aug 3, 2007
1:26 pm
5602
I began this over the July 4th holiday and took my most recent data last night, Aug 3 This is 12 hours of [SII], 10 hours of [OIII] and 7 hours of Halpha It...
Richard Crisp
rdcrisp
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Aug 5, 2007
12:45 am
5603
Long since my last post. Lousy weather since late April here, so I had the opportunity shooting again this week end. IC 5070 in Cygnus, part of Pelican Nebula:...
didier keus
dkeus31
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Aug 5, 2007
3:46 pm
5604
Hi, I am going to complete my Elephant Trunk project (narrowband and RGB) but so far I have managed to gather 6 hours of VdB142 in H-alpha only. I hope you...
Dominik Wos
domek_ws
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Aug 5, 2007
10:19 pm
5605
nice one and you got the proplyds too. they were in your previous image too as well as miine from last year ... From: Dominik Wos To:...
Richard Crisp
rdcrisp
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Aug 5, 2007
11:19 pm
5606
very cool Didier! Very cool rdc ... shooting again this week end. ... 20America/pelican.htm ... levels...
Richard Crisp
rdcrisp
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Aug 6, 2007
6:05 pm
5607
Hi this is a cross post from another group, sorry if you already saw it, but if not you may be interested. I found a reasonably priced source of gas discharge...
ssb73q
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Aug 7, 2007
3:40 pm
5608
I added a bit more exposure to this from the last checkpoint and that smoothed the background a bit as well as went a bit deeper with the nebulosity there are...
Richard Crisp
rdcrisp
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Aug 11, 2007
3:05 am
5609
Incredible work, Richard! ... From: Richard Crisp To: norcal_ai@yahoogroups.com ; narrowbandimaging@yahoogroups.com ; FLI_Imaging_Systems@yahoogroups.com Sent:...
Photon Collector
photoncollec...
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Aug 11, 2007
5:48 am
5610
this is just getting started but looks pretty interesting to me. There's the big bright nebula in the middle but there's lots of faint dark nebulosity all...
Richard Crisp
rdcrisp
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Aug 11, 2007
5:58 pm
5611
Hi richard, I am also working with a image of the Veil Nebula. What I found is that the inner part of the background is brighter than the regions outside the...
Poschinger Konstantin...
kposchinger
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Aug 11, 2007
6:14 pm
5612
yes, i use flat fielding when calibrating and also do additional gradient removal in the processing ... From: Poschinger Konstantin v. To:...
Richard Crisp
rdcrisp
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Aug 11, 2007
6:20 pm
5613
Also known as LBN400: http://www.buytelescopes.com/gallery/photos/7936.jpg I don't know why it is largely ignored. Has some areas that might be interesting at...
erdmanpe
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Aug 11, 2007
6:27 pm
5614
I would like to see one without the additional remove of the gradient. Konstantin Konstantin v. Poschinger Hammerichstr. 5 22605 Hamburg 040/8805747 ...
Poschinger Konstantin...
kposchinger
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Aug 11, 2007
6:35 pm
5615
nice one as usual Peter I suspect the reason it is ignored is that it is not in The Sky and not in SkyAtlas2000 It also is right beside NGC7000 and that one...
Richard Crisp
rdcrisp
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Aug 11, 2007
6:54 pm
5616
here are my raw stacks after calibration, stacking and ddp www.narrowbandimaging.com/images/veil_raws.zip it is 16bit fit data ... From: Poschinger Konstantin...
Richard Crisp
rdcrisp
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Aug 11, 2007
6:55 pm
5617
here's a wider view of that area http://www.narrowbandimaging.com/cygnus_widefield_ha_35mm_6303_page.htm it isn't very sharp but it sure has a lot of area in...
Richard Crisp
rdcrisp
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Aug 11, 2007
7:07 pm
Messages 5588 - 5617 of 7215   Oldest  |  < Older  |  Newer >  |  Newest
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