If you are willing to deal with oddities, you can spend less and make that choice. Step up to the quality and performance of Astrodon narrowband filters. Yes, our filters are more expensive, but you always know what you are getting with Astrodon Narrowband filters the best performance in the market guaranteed. >80%T for SII at f/3 That is just my opinion for what it is worth. You currently have javascript disabled. Very consistent with what I found with the Astrodon narrowband filters compared to some 3 year old Baaders. Other filter suppliers try to "force fit" their orange filter (designed for the interline KAI11000, KAI2000 sensors) for use with these full-frame sensors. Yes they are worth it. When buying at Astronomy Plus, in addition to having the best pre-sale and post-sale service, we offer you the best deals available. There halos on the ZWO filters is quite stark and there is basically none with the Astrodon filters. Durable hard-oxide sputtered coatings with a 5-year limited warranty against delamination Add Apertura Air Blower for Lens Cleaning - BULB to your order? Whether they are worth the cost was the subject of an other thread that I referenced above. You are just not making the right data-driven decision, which I am trying to tell you to do. Im hoping this thread will help guide me. You didnt hurt my feelings, dude. I would love it if they would ever come out with an ASP-C mono chip, but that is a pipe dream at this point. After a crop to remove the dark edges, I did a DBE using the Ha frame as the reference to remove any gradient. This guaranty is expensive to manufacture for such spectrally narrow filters, but it assures you in writing on each filter box that you will get what you paid for. These two factors combine to provide you with the highest contrast available. The next filter to complement your LRGBH-a set is an oxygen filter. You can go look on Astrobin, or the hundreds of threads here where people have make it 100% clear that Baader, Astronomik, ZWO, and Optolong filters are far inferior. And that, my friends, is how the story ends. Si vous avez besoin de la traduction dune description de produit, communiquez avec nous pour que nous vous la produisions en priorit. Be first to review this item and help others. It has a huge amount of data in it and I highly suggest reading it in full if you are considering filter purchases or how to fix these types of issues. Random selection of 5 nm Astrodon filters measured %T values at the H-a emission wavelength of 93, 98, 97 and 98%. I just dont see myself ever using it. However, with a combined astronomy experience of over 115 years (117 to be exact), our team of telescope and astrophotography experts, a.k.a. Our recent blueshift data show that Astrodon 3 and 5 nm filters can be used with nearly all systems as fast as f/3.5 with virtually no loss in emission signal, so you do not need to buy custom upshifted filters if you have both fast and slow systems. The E-Series red filter is a deep red filter about 60 nanometer wide, which excludes much of the light pollution from high pressure sodium street lamps. Parfocal with all other Astrodon filters (depending upon telescope optics) If you're looking for other sporting optics or weapons scopes, please visit our partner site. The best comparison is for Sigma Orionus: there is a clear halo with the ZWO and basically none with the Astrodon filters. >4 OD (out of band blocking) 300 1150 nm If you want to spend coin on the best results, you buy Astrodon. However, in the mean time, I had already bit the bullet and ordered a full set of LRGB, Ha, OIII and SII filters from Astrodon to replace the ZWO filters. There is a clear difference between what you get in terms of your data with Astrodon filters and other brands. These sleeves were different than the sleeves used for the narrow band filters. Single, striae-free 1/4 wave fused silica substrate This usually works, but not always. You will never know that you are using their 71% filter compared to a 97% Astrodon filter because they do not guarantee this important performance parameter. At some point I will remove the ZWO masks and test this again. With these Astrodon Narrowband filters, imagers can count on consistently high performance, as well as a more narrow spectrum compared to most other filters for superb contrast and the ability to view the faintest nebula detail. They make the best filters, period. You can see the increase in contrast in the sequence of equal-exposure images of the Crescent Nebula (NGC 6888) taken on the same system and on the same night. ). "Gear Experts", knows astronomy and how to service our customers. At the end of the day, whether something is worth the price is clearly a subjective decision. All the filters were nicely labled on the edge. By using our shop you agree to the use of cookies. I used the master flats that I showed above along with Dark frames for calibration. The product has to be in stock for the price match to be applied. The four LRGB filters came in the same box. Acclaimed for their ability to reduce halos around bright stars, Astrodon Narrowband filters are still able to accomplish this even for long 30 to 45 minute exposures common to narrowband astrophotography. Whether they are worth 3X the price is up to you. Since I put the ZWO masks in place, this is not really fair, but that was what I have here: Bright Light transmission through the 36mm Astrodon E-series LUM filter. Our latest narrowband filters are typically achieving >95-98% transmittance. AstrodonNarrowbandfilters currently are provided off-the-shelf for: When we refer to bandwidth, we are referring to the spectral width of the transmission region at 50% of the peak transmittance (FWHM full width at half maximum). The big challenge was with the non-linear stretch - I dont think that they are really the same. Peak transmittance guaranteed >90% at the emission line (97-98%T typical) f/10 to f/3.5 for both 3 nm and 5 nm We accept the following forms of payment: Visa, MasterCard, Discover, American Express, Direct Wire Transfer, Money Orders & Checks. If you want the look of Hubble Space Telescope (HST) images, such as the famous Pillars of Creation (the Eagle Nebula, Messier 16), then the next filter to consider adding to your collection after H-a and OIII is the SII (es-two) or sulfur Special offer Get 50% off any (or all) filter sets, when you buy any Atik mono camera (with the exception of the Atik GP).The SHO narrow band filter set is compatible with our filter wheels and allows astrophotographers to capture deep-sky objects in f/2 Highspeed Filterset consisting of 3 Filter: H-alpha, O III and S II. The optical elements are treated with ultra-thin coatings. Sign up for savings and product announcements. The filters were, however, fully coated to the very edge unlike the ZWO filters. H-a emits at 656.3 nm and NII emits most strongly at 658.4 nm (and weakly at 653.8 nm). Just for point of reference, I went through exactly the same dilema with respect to the Astrodon filters and the price. The ZWO filter masks do overlap some at the edges so that they do not sit flat onto the filter wheel. using them. And again thanks to everyone who has contributed to this set of post. Yes, our filters are more expensive, but you always know what you are getting with Astrodon Narrowband filters the best performance in the market guaranteed. Im thinking about putting together a new mono setup and spending a massive amount of cash on Astrodon filters will be my biggest dilemma when the time comes. Astrodon >>>>>>>>>>>>>>>>>>>>>>>>>>> Others. This is why our >90%T guarantee is so important, even though it becomes very costly to manufacture. Each of the narrow band filters came in a paper sleeve that was padded with a protective cloth/paper. At some point I will see what they look like without the filter masks. The surface of the SII and Ha was highly reflective. If anyone here thought I was trying to be rude, I apologize in advance, but this discussion has been had in many permutations and the end result is always the same. Then did noise reduction with a Multiscaler linear Transformation. That thread also generated a lot of passion to say the least. At 656.3nm, a narrow-band emission filter is required to separate H-alpha from the SII doublet (671.6nm and 673.1nm). Filters designed for use Atik Narrowband Filter Kit- H-alpha, OIII, SII, Baader 3.5/4nm f/2 Ultra-Highspeed Filter Set - CMOS-Optimized H-alpha/O-III/S-II, Baader 3.5nm / 4nm Narrowband Filter Set - CMOS-Optimized H-alpha/O-III/S-II, Baader 4nm Ultra-Narrowband OIII Filter - CMOS-Optimized, Baader 6.5nm f/2 Highspeed Filter Set - CMOS-Optimized H-alpha/O-III/S-II, Baader 6.5nm H-alpha Filter - CMOS-Optimized, Baader 6.5nm Narrowband Filter Set - CMOS-Optimized H-alpha/O-III/S-II, Baader 6.5nm OIII Filter - CMOS-Optimized. The halo on Alnitak is also clearly better. The USB was set at 90 for both. The E-Series filters were designed for cameras containing the full-frame Kodak KAF8300, KAF3200, KAF6303, KAF16803 sensors. Our knowledge is only surpassed by our passion for this wonderful hobby we all love so much. All filters are coated to the edge and edge-blackened to minimize stray light contamination that can come though the uncoated rim in other brands, Astrodon 3nm H-alpha Filter of the chosen size, Astrodon LRGB Gen2 E-Series Tru-Balance Filter Set, Astrodon LRGB Gen2 I-Series Tru-Balance Filter Set. If you are not, then my apologies. Bare with me as I will take me some time to get all the data posted. They are truly amazing. In the case that this article currently is not available from the warehouse, please note the following: we order from this supplier in regular intervals. You totally missed my point. I am not sure who you were responding to here. OIII (ohthree) emits light near 500 nm and is a blue-green- or teal-colored filter. I mean really FLAT. The frame allows the filter to be attached to a connector, a filter holder or in the housing of a camera. We will match the price of licensed retailers or manufacturers only. Among others, there are anti-reflective coatings for reducing, and dielectric coatings for increasing reflection. There are so many types of telescopes and accessories that the process can be overwhelming enough without having to worry about pushy salespeople trying to make a big commission. 49.7mm x 49.7mm Square Unmounted (HA3_50S), 3 +/- 0.025 mm thick (5 nm); 3+/-0.05 mm thick (3 nm) substrate prior to coating I assume you did not bother to read the material Don has made available about his line of filters (which isnt marketing crap - Don is an imager as well)? I do think they are worth the investment. This is basically the unboxing and installation of the Astrodon filters into the ZWO filter wheel: The narrow band filter each came in the own separate boxes. With a filter that's spectrally narrower, however, the difficult part is maintaining a constant signal (% transmission at the emission line). To close the loop here -- the answer is a resounding yes. Edited by cfosterstars, 16 January 2018 - 04:58 PM. This is why Astrodon's >90%T guarantee is so important as it provides assurance that you'll be able to take advantage of the upgrade in contrast these narrow bandwidth filters offer. However, most imagers blend their H- data into their red RGB data to enhance structural detail while maintaining a natural look. Prior to mounting the filter wheel and camera back onto the OTA, I took transmission images through the filters to look at the reflections and how well the edge coating worked.