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Found 13 results

  1. I currently have an ultra high contrast filter - Zhumell High Performance UHC - and have had some luck seeing additional features in larger objects while using it. I was thinking about purchasing an Oxygen-III filter also, but wonder just how different is the O-III compared to the UHC? Is it worth the money to have both in my filter collection? My scope is only a 130mm, and I would love to see additional details while finding and viewing DSOs such as Dumbbell and Ring nebulae, see more details in Eagle, Trifid, etc. It would be awesome to find something that would also enhance galaxies too (M31, M33 etc.). Does anyone know if an O-III filter will perform better than my current UHC filter?
  2. Hi, I was wondering if Baader's UHC-S filter is worth to buy. I would like to know if it is good for imaging with my 80/400 achromatic refractor, not modded Canon EOS 600D on EQ2 (I'll get EQ3-2 soon) mount with single axis motor drive. Thanks in advance!
  3. Hi Has anyone ever tried to view any planet with an UHC filter? What were the results? Clear skies
  4. Hi, As i may be looking to purchase an O-III or a UHC filter sometime in the future, I've a question thats been bugging me for a while. By picking up a 2" filter, would I also be able to use it with 1.25" EP's if I unscrew the lens of my 2x Barlow and replace it with the filter? Do they fit and are they the same thread pitch? I'd guess I'd be using my 20mm and 32mm EP's with the filters, but they are 1,25 and 2" respectively and I'm not going to buy the same filter in two different sizes. Thanks
  5. Hi guys, its me kronos, and i am about to purchase a new a new filter for my 5” and 8” scopes. I cant decide wether to buy a UHC or an oiii filter. my budget it 70euros max And i have settled between the uhc explore scientific or the oiii explore scientific. i am open to other suggestions in this price range i am keen to observing more deep sky objects with better detail Whichever filter i wont buy now, i will buy a better one in the future(for example if i dont buy the uhc , i will buy an astronomic uhc in the future) So far i have loved the views of m42 (i have observed many more objects)and now thats its fading into the suns glare, i m starting to find more and more objects.Hoping to observe the veil and the lagoon nebula as long as some planetaries and definetly globulars(which i ve heard that they dont take filters(am i correct?). I ve heard that the oiii enhances contrast and dims the object, but is the dimming worth the additional contrast from the uhc? i havent yet observed my first planetary , but i am planning to soon.I m really excited to see one! I will make another thread similar to this then,asking questions that may arise and reach a conclusion. I wrote this thread to ask about your preferences with filters(oiii or uhc) and for advice on what i should buy according to the objects i want to view) thanks, any advice will be useful. kronos Clear skies.
  6. Heyyyyy its me againnn . I am trying to find a good UHC (Open to OIII ones aswell) filter to use for nebula observation. I ve stumbled upon these 2 : 1 Explore Scientific UHC Nebula Filter https://www.firstlightoptics.com/uhc-oiii-visual-filters/explore-scientific-uhc-nebula-filter-1-25-2-inch.html 2 UHC FILTER https://www.firstlightoptics.com/uhc-oiii-visual-filters/uhc-filter.html Can somebody tell me which is better? Or if somebody has one themselves , can tell me if they are worth buying or just saving for a better one. If you want to you can recommend me a good UHC OR OIII filter for viewing Nebulas thanks. -Kronos
  7. Heyyy its meee kronos and i have been wondering about getting a filter...I really want the best contrast and brightness i can on my nebulas(i want to view M42 M57 M27 M31 M81 M82 and lots more) with my future 8" dob. Is this filter really going to help me? https://www.firstlightoptics.com/uhc-oiii-visual-filters/es_uhc_filter_125.html If it just a matter of quality of the filter itself can you suggest a better one in the same price range? Or will not the uhc filter help me in general .IF so can you reccomend another one? Also is this https://www.firstlightoptics.com/uhc-oiii-visual-filters/uhc-filter.html this https://www.firstlightoptics.com/uhc-oiii-visual-filters/es_uhc_filter_125.html https://www.firstlightoptics.com/uhc-oiii-visual-filters/baader-uhc-s-filter.html this better?
  8. Hi everyone! I was lucky enough to get a clear night last night, and have the first chance to test out my new Explorer 200p. Some of you may remember me posting a topic about how people lift such heavy things, and I got a huge amount of replies. In the end, I decided to split the scope into four parts: 1. Tube 2. Counterweights - to lighten the load as I move the mount 3, Accessory tray - So I could fold the tripod legs in 4. Mount + Tripod In the end, it took me about 15-20 minutes to set everything up, then I had to wait about 20 minutes for the sky to darken. In that time, I looked for an iridium flare, which the iflares app predicted. In the end, it never happened (Though I saw one at Magnitude 0 later on). Because it was nowhere near dark, I just pointed the scope at Vega. After that, I took a look at Albireo, looking as colourful as ever. I then looked for the double-double, but I struggled to split it - possibly because of seeing. After that, it became sufficiently dark to start DSO hunting. My first target was the Ring Nebula. I'd seen it with my old 150, but it was quite hard to spot. With the 200p, it jumped out at me! I added more zoom, and the nebula filter, and the ring shape was clear as day! My next target was M13, an old favourite. It was easy to see, with a somewhat mottled surface at low zoom, but when I cranked up the power, the stars were easy to see - much more so than in my old 150. After that, I looked at the Andromeda galaxy. It was a lot lower down, in hazy sky, so it looked little more than a hazy blob. Hopefully, it should be better when it's better placed in the autumn. Finally, I found the dumbbell. It was easy to see at low power, without the filter, but when I zoomed in, and added in the filter, it showed some good detail. However, even with all this, the dumbbell shape was still quite subtle. Still, even in photos, it's not as contrasty as the Ring. After that, it was getting on for eleven, and if I was up any later, my parents would kill me (not literally of course), so I came in. It took me about half an hour to bring my scope back in, and in that time, I let a couple of large moths in. Overall, it was certainly a good first observing session with my new scope! Thanks everyone for the advice you've given me with carrying my scope, as well as other things! David
  9. AKB

    EAA with UHC

    Having, briefly, tried EAA with a 7nm Ha filter, I haven't been satisfied with the signal to noise ratio achieved within a reasonable time (say, 5 to 10 minutes) with 60 second subs. I'm sure I"ll go back to this, but in the meantime I have been trying out an Explore Scientific UHC filter (because I happen to have one already.) Another warm night last night, with little moon, was a chance to try this out: Hyperstar, SX Ultrastar, UHC filter, and, because I was also going for some longer stacks, I used guiding (which, I must say, works a treat with my Avalon M-Uno mount.) Three targets (only), all 10 x 1 minute: Cygnus Wall (well, some of it – terrible framing) Eastern Veil Crescent (poor focus here, I think: tried to re-focus without a Bahtinov mask – didn't work!) Once again, sadly, I forgot the L-R flip required to orient the Hyperstar images... Just by way of comparison, here's a post-processed image of the Eastern Veil (31 minutes, just stretching and a bit of star reduction, with L-R flip) which I'm quite liking: I still feel I'm not doing well enough to grapple with colour yet. It was a sort of resolution for this year to try and get things reasonably right in mono first.
  10. Hello everyone! I'm buying my first telescope, a Skywatcher Skyliner 8" dob, and I'm thinking of buying a 1.25" UHC filter with it to get improved views of all kinds of nebulae. The shop where I'm buying has the following UHC filters to choose from: Explore Scientific UHC Filter (€ 51) Optolong Premium UHC Filter (€ 52) Omegon UHC Filter (€ 58) Astronomik UHC-E Filter (€ 64) Baader UHC-S Filter (€ 79) Astronomik UHC Filter (€ 95) Lumicon UHC Filter (€ 193) They also have some other filters which are not categorized as UHC filters, but I think should be: Skywatcher Deepsky Filter (€ 52) Orion SkyGlow Broadband Filter (€ 79) -> more Light Pollution (LP) than UHC I guess Orion UltraBlock Narrowband Filter (€ 99) Thousand Oaks LP-1 and LP-2 Broadband and Narrowband Nebula Filters (€ 105) -> again Broadband probably more for LP I guess Lumicon Deepsky Filter (€ 193) I'd rather not spend 193 euros on the Lumicons (although I've read good reviews about those), but which one is the best one apart from the Lumicons? I've been searching a lot on Google for threads about this and UHC filters seem to be the best allrounder, but every time different filter brands and types are discussed and I just can't make up my mind with all the information out there. I know there are broadband and narrowband (true?) UHC filters, but I guess most of the ones I listed are broadband? I've also read that broadband filters (which are more for LP than UHC I think) and especially Light Pollution filters aren't really that effective at all, especially compared to narrowband... Or should I not be buying a UHC Filter for a first telescope in the first place, and just get used to the unfiltered views lol? I believe my night sky light pollution level is around level 6 to 7 (Bortle scale). If someone has some personal experience here with one or more of these filters, your opinion would be very much appreciated :-)
  11. Hi All. Need your help on my first try at M51. After stacking around 1 hour+ of 2 mins exposures this is what I got. I wasn't able to use darks and flats because I had a problem with the darks that I took during that night. I'm getting a slight red tone on the background when I enhance with levels and curves in Photoshop. I took the image in a fairly dark site but I used a UHC filter to see if it has any help on the image. My equipment is a Celestron C6N reflector, Nikon D90, and a Baader UHC filter. Thanks!
  12. SOLD Explorer Scientific UHC Nebula Filter 1.25" with original box and certificate. £28 including postage.
  13. Acknowledgement: Many thanks to Professor Karen Kwitter at Williams College and Dick Henry at University of Oklahoma, for kindly giving their permission for using their extensive meaurement shown here http://web.williams.edu/Astronomy/research/PN/nebulae/search/index.php#galactic_milky_way This guide is free for personal use, any further distribution needs to attribute to the source of the above webpage. Some basics about the nebula filters: There are 3 most often used nebula filters, i.e. UHC, OIII and H-beta. The light spectrums in consideration are 486nm(4860 angstroms), 496nm(4960 angstroms) and 501nm(5010 angstroms). UHC: transmits all 3 light waves OIII: transmits only 496nm and 501nm H-beta: transmits only 486nm Scores for filters: 5 and 4 are Best depending on the flux measurement (High measurement in x10-12 gets 5, while high measurement in x10-15 gets 4), 0 and 1 means worse than without filter, also depending on the flux measurement, finally 2 and 3 means better than without filter. Summary: Of the 171 Nebulae, OIII performs best on 146, UHC best on 28 and H-beta on 10. There're some more commonly observed nebulae not in in the list though, such as B33, NGC 1499, 6960, 6970, 6979, 6992, 6995, 1976, 1982, 2024, 2175, 7000, IC 1340, IC5070, IC5146, IC405, Sh2-155, Sh2-273, etc Nebulae_spectrum_and_filters_ST.xlsx
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