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  1. Hello. I'am buying set of astrodon NB filters. Please contact me via email: jukkapaavilainen87@gmail.com or drop message in here.
  2. I read long about the LRGB imaging whit mono camera. I found multiple references that the lps filter is increasing fwhm. I have no coin is this. I have happily shoot whit idas-lps-d1 for 4 years using DSLR. I have been able take good pictures whit it, but I honestly belive when you work whit mono camera and RGB filter(that allready cut the sodium light polution out) The lps only adds one reflective layer of class in your image train. For LED light polution the lps filters are not the solution.
  3. The SNR part is true, If you look just the background. But if you look the snr of your target(mainly galaxy) it might not be so simple. I dont know what is the truth. But based what I have read I would not use lps filter whit LRGB filters. Whit DSLR, shooting HA target, I think I would still use lps filter. Shooting galaxy whit any equipment I would not use lps filter. Here is the topic. There is more spesific topic also, but could not find it. Look at the page 2 whit good comparison image. https://www.cloudynights.com/topic/573267-light-pollution-filters-for-luminance-broadband-targets/
  4. Remember that you lose more singnal than you gain. Most of RGB filters allready clip out the most common light polution source. Might give some contrast to nebulas. But for galaxy's lp filters just clip out too much light coming from galaxy. Jon at CN has proven also blurring efect of idas filter's.
  5. Sorry for mixing. But have seen great images whit asi 183 and both of those scopes. It is little smaller size chip. But I would go for the newest technology out there. The 183 is best ccd type of cmos out there. As for those 2. Plenty of topics around there. Many have changes from kaf8300 to asi 1600. But for me the lack of AR coating in no go for the 1600. I would take the 8300 over the 1600.
  6. Still need the narrowband filters. Only 1.25'' size now.
  7. 1,25" size for imaging. Prefer baader/astronomik/astrodon/croma. Swiching to mono camera. I need the items posted to Finland. Please send me email: jukkapaavilainen87(at)gmail(dot)com
  8. I have interest too. Please send mail to: jukkapaavilainen87(at)gmail(dot)com
  9. Here is my new esprit benchmark results:
  10. I bought the Skywatcher esprit 80, fine tuned version! Waiting post to arrive. I got this confirmation note from Tommy: Your Esprit has now a new rubber buffer ring in front of lenses, and lenses are collimated and the center lens well supported. So it stays in collimation when knocking on the cell. The front and rear lens are very slightly supportes by the screws, they are senisitive. If you have very cold temperatures and you see dark structures in the star halo coming, you just loosen the respective screws on the front and rear lens by 1 tick (1/32 turn), not middle lens. Now the star halo is without structures, very smooth, as we like it. The focuser is centered on the objective, and the objective to the focuser, so the optical axis is dead center. The focusers friction is adjusted, but you can do that yourself by tweaking the two teflon bars inside. You find the M2,5 screws next to the focuser wheels. And the focusers worm housing is tightened (sometimes a screw is just loose there). I made interferograms and the fringes are very straight, estimation of Strehl is about 95% at 550nm. Awesome job telescope austria!
  11. The adapter is suplyed whit the esprit. My dealer said it is adapter B. Screws in to the focuser and does not effect sensor distance. There is clip in filters for nikon also. But whit 200-300e. I would like to use my existing 2" filter. All good. Waiting for final price and then will be getting new scope!
  12. Thanks daz, good information. Anyone has idea about the 2" filter connection?
  13. Hello. I tried to look for answers for few questions, but could not find anything solid. I'am ordering the esprit 80 tomorrow if all things are clear. My new setup will be eq-6 mount, esprit 80 and Nikon D5100 coldfinger cooled/full spectrum modified. All will be in my observatory. Questions: 1. How to connect 2'' IDAS-LPS-D1 filter to the field flattener whit DSLR? 2. What sized tube rings can be used? I would like flexure free guide scope mounting? 3. How is the rotation working? Captains wheel? 4. Is there anything I should be aware, or ask the dealer before I order? Will the 2" filter go inside the reducer to the telescope side? Here:
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