I just started this last night. I took 6 x 30 minutes of halpha through the 150mm f/2.8 lens stopped to f/4 using the cm10xme (KAF3200ME sensor). if the...
Very nice! ... sulfur ... to ... down ... camera. ... is ... light ... such ... http://www.narrowbandimaging.com/ic1396_150mm_cm10_s2hao3_29x30min_pa g ... ...
A very interesting rendition of this object Don. Beautiful! Clear skies, Kevin Dixon www.kevindixon.westhost.com From: "Don Goldman" <donclearview@...>...
I am 10 hours into this targeted 13 hour project. Last night the clouds shut me down before starting and it looks like that may persist for a few days. So I...
I am offering all 3 parfocal Schuler narrowband dielectric-coated, A/R- coated 1.25" filters for $439, which is a savings of $68 if bought separately. The H-a...
How about us in the UK? That price converted to GBP is roughly the same as a set of Ha/SII/OIII filters from Astronomik.... how does the Schuler product...
Yep, can't do much about the import situation across the pond, and I do understand. I've shipped alot of Astrodons and Schuler UVBRI filters to Europe. The...
if it is better to use a 6nm filter than a 3nm one (i still dispute that) then why not use a 15 nm filter over a 6nm one? In fact why not carry it to its...
1. Excellent narrowband images have been posted with the Astronomik 15 nm, Schuler 9 nm, Astrodon 6 nm, and 3 nm CS filters, even occasionally by you. 2. Your...
Hang on a minute chaps - I am trying to learn a few things here, not start World War Three. The disagreements between the concerned parties are well documented...
Hello, Tom, My keyboard is just cooling down <g>. The overall goal is to make narrowband filters as narrow as possible with the highest transmission possible....
Your basic point is correct, but there are indeed some additional considerations. First, a restatement of what's critical: * If you want to isolate a...
Fantastic info, Don! Thanks. By the way... I happen to like "vendors" like you. Without you we'd still be chipping optics out of obsidian using a deer antler...
... wasted and still have a crummy looking IC1396. You get what you pay for. Yours is one of the worst looking narrowband images of IC1396 I have ever seen,...
LOL<G> I thought my mother-in-law was a real B-tch and knew how to pick someone a part. You guys are excellent. The way the flames fly and how every point...
... related ... that ... about a ... Ron, nearly everyone that makes filters uses a sputtering system. There's no magic there. Where have you been for the last...
"The field of optical coatings has extensive applications for oxide films. Titanium Dioxide is used as a high index film in multilayer interference filters....
search key "optical interference filter manufacturing" from Omega Optical: Omega Optical will manufacture filters to custom specifications and remains...
Hi, All, This was just posted on Ron Wodaski's CCD-Newastro group. I thought it may be relevant to the discussion about narrowband filter design for you. ...
an [OIII] filter is a far better test of light pollution rejection than an Ha filter because the [OIII] is usually quite faint relative to the Halpha and the...
nice shot from Dennis that Don cited as proof of the performance of his moderately narrowband (6nm) filters in terms of both light pollution rejection...
HI EVERYONE -- POSSIBLY THE FAULTS OF ANY ASTRO EQUIPMENT OR THE MERCHANT THEREOF MIGHT BE CRITIQUED IN A "JUST SLIGHTLY" INDIRECT MANNER [AND VERY EFFECTIVELY...
Why beat around the bush when you can grab the bull by the horns and twist its neck until it gives up and promises to never foul your air again? ... MIGHT BE...
OK, what we really need is some calm opinions regarding filters to actually purchase. I am condemned to VLimMag 3 to 3.5 skies at zenith at my home and so far...
Hello, Samir, excellent questions. Your light pollution is a bit worse than mine. I'm at 18.8 mags/sqarcsec. I cannot see the Milky Way overhead from where...
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