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Yoddha last won the day on August 4 2014

Yoddha had the most liked content!

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About Yoddha

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    Sub Dwarf

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    Sofia, Bulgaria
  1. Many thanks Alan! The spring will get back soon, but we are blocked in Sofia
  2. Hello, This is my second round of the ASI533MC Pro testing. Again a popular target is selected in order to give better base for comparison. In this project didn't use any filters in order the camera own performance. Other change is that the gain is a bit lower than the unity, trying to increase dynamic range. As additional note, have to add that 2/3 of the frames were taken with moderate sky This winter was not generous and had to use what is given... I'm quite happy with the result The camera is sensitive and gave deep look on the object even with the smallish 80mm refractor. 97х5min = 8h 5min, gain 75, offset 70. WO 80FD, WO FRII, CEM60, APT, PI, PS
  3. Hello, We are very happy to announce that APT has a new site https://www.astrophotography.app The old links should already redirect to the new place... There are bit more things to take care in the backend, but now this is the APT home Hope you find it useful and like it!
  4. Absolutely agree! It can be described better what speeding a scope does
  5. Olly, I see that you have 10" ACF in the signature. Did you try to image with it or it is only for visual use?
  6. Yes, I mean reducer Definitely I want to make the scope near to f/5 in order to gather more light faster
  7. The price tag of C11 EdgeHD+Corrector is our of my desired budget... CEM60 will have to work harder
  8. Hi Wiu-Wiu, The Meade is on focus because it has f/8 version which can be speeded to under f/6... Is C11 outperforms 10" ACF significantly or the advantage is based on the aperture and weight?
  9. The discussion is getting very interesting! The RC8 are very good scopes and all images with them are very good. However the 8" are too close to 130mm APO. What bothers me is that the images quality between RC8 and RC10 in majority is in favor of RC8 which makes me think that maybe 10" are too hard to be made with higher quality at this price tag??? Olly, your images shows exactly why I'm a refractor fan I see that you have 10" ACF in the signature. Did you try to image with it or it is only for visual use?
  10. Hello, I want to make an upgrade in the next half year or so and for some time am reading opinions in the net, however can't get clear direction and will be very thankful to hear your opinions Here is the background. I'm pure imager (once or twice per year am making short visual walkthrough for friends that has no experience at all). The setup which am building is permanent located in a small obsy - a 2.2m Uniwesal dome (don't mess with them unless you like big troubles). The mount is CEM60 and my primary camera is QHY22 with set of Astrodon filters - 3nm narrowband and LRGB. For many years am a refractor guy In a parallel world where money are not a factor would like something like 180mm of that kind and bigger dome, but I am here and now... It is not possible to house/afford something bigger than 150mm which is not significant step over the 130mm I have... So am looking for alternatives There are two options that tear me apart and still can't find stable direction: 1. GSO clone RC 10" f/8 truss tube, detached focuser, with reducer that will make it ~ f/5.4 2. Meade ACF 10 f/8, possibly additional focuser, with reducer that will make it ~f/5.4 Both will be used with OAG. The collimation should not be a big issue - it is permeant setup and in worst case will require tuning once-twice per year... Am I right? My research started and continues with real images hunt in Astrobin (in addition to reading everything that can find in the forums). There are some spectacular images taken with both scopes! My considerations so far are: The RC pros with truss version - the cooling will be faster because the open design and fans, the temperature shift should be smaller. The cons are bit bigger stars, spikes. The ACF pros are the smaller obstruction, bit smaller stars and no spikes. The cons are slower cooling, bigger temperature shift, mirror flips ??? May need additional focuser, bit bigger price. In long term I want to use the scope for astrophotography for smaller targets. In very long term if one day I find myself tired of astrophotography am thinking for supernovas search or variable stars photometry... As I started will be very thankful to hear your opinions for those two models, for the links that I have missed, as well as the points and considerations I don't see or know P.S. I have excluded the RASA models because are not compatible with the filters I have and because they require manual filter change. Fast Newtonians are excluded because are also too fast for Astrodon and because it is hard to put Corrector + OAG + Filter wheel.
  11. Hello, This nebula has many numbers and names - Westerhout 5, Sharpless 2-199, LBN 667, IC 1848, Soul Nebula or Embryo Nebula. It is a big object that gives spectacular show of light, colors and shapes, no matter what scope and camera are used. The emissions in various wavelengths combined with dark nebulae, pillars and bubbles of creation are almost hypnotizing at least for me The pillars which are so many here and are very beautiful, but the small bubbles floating in the blue light are like gems. The processing is pretty conservative – no hard push and no noise reduction in order to preserve the clarity and the faint details which are enormous for the modest 80mm . I’m sure that will give more play with the data as it is my biggest project so far and the object is fruitful for experiments. Definitely it is one of the pictures I like most so far and hope that you will enjoy it too. Total 25h 15 mins in 20 and 25 mins exposures. WO 80 FD + FR WO II x0.8, CEM60, QHY22, Astrodon 3nm, APT, PHD2, PI, PS. As usual the target triggers a quest to find more info about the area. The Soul Nebula is part of bigger complex formed with its famous neighbor – the Heart Nebula. They are made for same interstellar cloud with size of around 580 l.y. laying at 7500 l.y. from Earth in the Perseus spiral arm of our Milky Way. The matter in Soul nebula is about 100 l.y. across is being blown away from the young star clusters in it - the IC 1848/CR34 in the blue light in left part of the image and CR 632 and 634 right blue part. These clusters are made for very young stars, just few million years and began their lives with the last ancestors of Homo sapiens like Homo Habilis and Homo Erectus. The star formation is still in progress in the pillar structures which are up to 10 l.y. long, as well as in the bigger bubbles / globules. However there are many smaller bubbles called globulettes. Some of them will disappear because of photoevaporation – which is process of ionization and blowing caused by the ultraviolet radiation of the bight stars. Others are big enough to withstand these stellar winds, but still not big enough to give a life to a star – they are areas where brown dwarfs and big planetary objects like Jupiter are in process of forming. It is very interesting sky area with studies in different wave lengths still in progress, so more curious facts and news are just around the corner…
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