I am checking out some filters and I find one OIII narrowband that is centered on the 501nm but has only weak transmission on the 496nm line. Somebody...
You should have no quibbles. This is why the narrower narrowband filters are centered on the more intense 501 nm emission line. Don Goldman www.astrodon.com ...
"Optec will be introducing soon SII and OIII filters that are parfocal with our LRGB 50mm set. These filters have hard coatings, +90% transmission at the...
Hi, after a couple of years, my Schuler 10nm H-alpha is picking up an oily film. I am concerned using any solvent for fear of hurting the filter. Does anyone...
Hi, does anyone use the low cost ATIK filter support kit? It looks like it may offer more flexibility for easily changing out more filters than the 5 filter...
hi, this is a wide field shot taken last night by atik 16 hr on telelens jupiter f/4 F=200 mm no autoguide on orion atlas eqg goto mount. seeing: 3/5 ...
I would like to take this opportunity to invite all of you to the newest astronomy forum/classifieds website brought to you by Adirondack Astronomy, BT...
Hi there, as most of the messages from this list is spam, I will leave this group. If anyone has a question about our Astronomik filters, please contact me ...
Gerd Neumann
gerd@...
Jan 31, 2007 10:19 am
1315
Hi kevinbm13, What about moderating a little bit your group in regard to SPAM ? If you have no time I would say just close this group. saludos Rainer PS As...
Sorry folks, have been out of pocket and country for a short stint. This is first time this has happened, but will appoint another owner and/or moderator. ...
Folks, Again, sincere apology for recent SPAM attack. We have never really had that happen before in this group, despite me being out of the country or out of...
Hi Kevin, IMO you need to set group settings so that all new member posts are moderated. Then after a reasonable topic specific posts is made, the new member...
The spammer is gone -- my apologies for not canning the spam earlier. I agree that setting up to have new members moderated is a good idea. It's up to Kevin to...
2007 East Coast Conference on Astronomical Imaging Fellow Imaging Enthusiasts: We have completed the hotel arrangements and updated our website, and both are...
These sound interesting, Richard. Does anyone else here have experience with the Baader filters? I note that they've also come out with 10nm H-b, S-II and...
Baader also supply an 8nm OIII, but it has to be used with an IR Blocker. Not a problem for some, a major nuisance for others. I still haven't gotten around to...
Hi Gerd, I purchased the ATIK filter drawer because of the low cost. The item worked ok for 1-1/4" filters, but there were some issues. The first problem is...
Gerd is a member of the ccd-imaging-technology group but I believe he has left this group [original message deleted for brevity] [Non-text portions of this...
Hi Don, no, I'm not going to follow Gerd around. My post was more for the group, feedback on my experience with a couple of astro filter products. BTW, it...
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