RafalT73

Last night was the first clear and cloudless night from several months. I focused on Rosette Nebula inspite of its relatively low position on the sky. Below photo was taken in H-alpha band with Astronomik filter Ha 6nm. 30 frames by 300 sek each. Telescope TSAPO140/910 with QHY28M Image in full resolution you can find here: https://moje-nocne-niebo.pl/en/ngc2237-rosette-nebula/

Hi, lately during my night session when capturing galaxy M51, I recorded tutorial about "Auto Meridian Flip" in SGP PRO. I explain what "Meridian Flip" is, how to set parameters in SGP and mount's controller, how to trigger it and correctly perform. I know, on the YT there are lot of material about SGP but maybe you may find something in my film what you miss in others. English subtitles are available!!! And this is the result of my nightly hunts: https://moje-nocne-n...irlpool-galaxy/

The weather last week was finally kind. Clear nights happened in the middle of the week, but there was nothing to complain about. By the way, I had the opportunity to test the new TS APO 140/910 (f/6.5) in cooperation with the QHY268M. The photo is of course a crop - in such a frame M51 is the real heroine of the foreground.

Hi, I had a similar problem some time ago. A calculator that very accurately determines the location of a speck of dust from the camera sensor turned out to be very helpful. In the calculator, you enter the specifications of the camera, the telescope and Dust Doughnut or Reflection Shadow Size counted in px (use big magnification in any graphic software to count its size in pixels) https://astronomy.tools/calculators/dust_reflection_calculator

Elephant Trunk IC1396 ???

from my backyard Iris Nebula

I hope, you found the video and entry on the blog useful or at least interesting 😀

Hi, I just finished a project of a portable power supply for an astrophotography. I like outdoor sessions, so stable and reliable power supply is essential. If you are interested in this topic, I invite you to watch the video on YouTube (English subtitles are available) and I invite you to my blog where I posted even more details. I will be grateful for any comments and remarks BLOG: https://moje-nocne-niebo.pl/en/portable-power-supply-for-astrophotography/ YouTube: https://youtu.be/pLgMopOeQUU (English subtitle available) ps. I apologize in advance for language errors

Fantastic frame, perfectly captured delicate dust structures. Congratulations, beautiful photo!

Thank you very much ☺️

Thank you. I was lucky because I could catch a few clear nights in a row. I wish you clear sky!!!

Hi, at the end of August and beginning of September I had a chance to spend some time under night sky. Unfortunately I couldn't went out of the city so the only option was to take photo from my backyard (close to street lights). Photo on LRGB channels (L 65 x 120s; R 49 x 300s; G 38 x 300s; B 49 x 300s). If you would like to see more detail or better quality of the image please look at my blog: https://moje-nocne-niebo.pl/en/ngc7023-iris-nebula/

I have been thinking about buying an ESATTO 4" Focuser for a long time or maybe even longer … and it happened. As a satisfied owner and user, I prepared Focuser's presentation, the more willingly that there is not much material about it on YT. If you are interested in ESATTO focuser, its technical specification, functionality and what kind of adapters to use to install it, then I hope that my review can be useful. Clik on the graphic below or following link https://youtu.be/ImX6eXebtH4 to watch it on YT ENGLISH SUBTITLES AVAILABLE

You are absolutely right !!! I made mistake in subtitles (already fixed) and in my presentation as well (unfortunately I Cann't change it now). Of course PHD2 measure backlash only in DEC axle! By the way I adjusted belt tension in both axles, but once again - the problem was in DEC only. Thank you very much for your opinion!

Thank you very much for kind words 😊. The reason why I bought the CEM70EC mount in NUC option was very simple - only this version was available on the market when I was interested in buying it. I was determined to buy a CEM70 mount with an encoder in RA axis and that was my priority. I looked in all stores in the EU, but unfortunately the waiting time was about 6 months. I found, if I remember correctly, only 2 such mounts in Great Britain in the NUC version. As the price difference was not very significant, I decided to buy it. Before buying, I read a lot about these mounts on various internet forums and I know that there were problems with proper operation in PHD2. But I also read on CloudyNights that a recent firmware update solved this problem - and it is! I've updated the firmware of hand controller, the mount itself and all is OK. I do not observe any conflicts between PHD2 and encoder. Guiding is stable and total RMS error as you could see in my video is about 0.27" Rafał

Hi, about five weeks ago I got my new CEM70EC-NUC mount from iOptron and after getting some experience I prepared short video review. So, if you are interested in that particular model or similar CEM construction ... if you would like to see how it guide, perform under load and what can be improved ... then I hope my review will be helpfull and interesting. I have done it in Polish language but also english subtitles are available. If there are errors in the subtitles, I apologize in advance, but in general I hope that everything is OK

Look at ccdware page where they explain how to calculate some guiding settings, if that’s the point… https://www.ccdware.com/resources/autoguidercalcv4.html

Hi, as I am waiting for my new CEM70EC I am very interested in yours experience with CEM120EC especially in terms of reliability of encoders. Have your concerns about the operation of the encoders come true? Are you satisfied?

Hi, thank you very much for sharing this material. I fight with proper alignment many times but I have never used feeler gauge. It is so simple way and helps me a lot!!! thank you

Hi Gina, I am trying to read all topic but discussion is really huge on 17 pages. I am very interested in this story and especially with your impression and experience. Main reason is that I am going to buy ESPRIT 80 for DSO Astrophotography. Can you share with us fresh info