ASA N-SERIES & ASA H-SERIES

31 topics in this forum

1. ASA8H secondary position using Cheshire

   By Nickb, April 5, 2020   

   • asa8h
   • cheshire
   • (and 2 more)

     Tagged with:

     • asa8h
     • cheshire
     • secondary
     • collimation
   • 3 replies
   • 1.2k views
   • 
   • Nickb
   • May 12, 2023

2. Poor quality / Problem with ASA Telescope !!

   By -Amenophis-, May 31, 2019
   • 8 replies
   • 2.2k views
   • 
   • andrewlockwood
   • February 1, 2023

3. When to Re-Coat Mirrors?

   By BobGillette, February 13, 2021
   • 2 replies
   • 764 views
   • 
   • -Amenophis-
   • August 30, 2021

4. Dew on primary, advice requested

   By mvandervorst, June 25, 2019
   • 5 replies
   • 800 views
   • 
   • Waldemar
   • December 23, 2020

5. Glue for secondary mirror

   By Fabroone, October 4, 2020
   • 0 replies
   • 698 views
   • 
   • Fabroone
   • October 4, 2020

6. Triangular shaped stars

   By caober, July 14, 2020
   • 3 replies
   • 891 views
   • 
   • MarkS
   • July 16, 2020

7. Astigmatism?

   By ChristerS, September 4, 2015   

   • collimation;
   • astigmatism
   • 3 replies
   • 2.3k views
   • 
   • -Amenophis-
   • June 4, 2019

8. Cleaning primary mirror

   By -Amenophis-, August 25, 2018   

   • how to do and what to use?
   • 13 replies
   • 2.3k views
   • 
   • LaCebra
   • May 25, 2019

9. Off Axis guiding or a guide tube?

   By mare_imbrium, May 7, 2019   

   • guiding
   • 2 replies
   • 922 views
   • 
   • mare_imbrium
   • May 8, 2019

10. Loose mirror ASA 12N

    By ChristerS, March 15, 2015
    • 5 replies
    • 2.7k views
    • 
    • LaCebra
    • September 24, 2018

11. Problem egrets on a star?

    By -Amenophis-, January 24, 2018   

    • ASA 10 Moravian G2-4000
    • 0 replies
    • 1.2k views
    • 
    • -Amenophis-
    • January 24, 2018

12. Alignment and Collimation of Fast Newtonians

    By MarkS, December 17, 2017
    • 0 replies
    • 2k views
    • 
    • MarkS
    • December 17, 2017

13. Eggs and multiple diffraction spikes and quality control.

    By pesa, March 23, 2015
    • 8 replies
    • 3k views
    • 
    • pesa
    • January 18, 2017

14. Backfocus and Moravian G3 cameras

    By lukepower, June 28, 2016
    • 23 replies
    • 4.5k views
    • 
    • afesan
    • October 6, 2016

15. Cleaning secondary and corrector

    By mvandervorst, April 18, 2016
    • 4 replies
    • 1.5k views
    • 
    • mvandervorst
    • April 21, 2016

16. Felt for N12 tube rings

    By mvandervorst, February 3, 2016
    • 5 replies
    • 1.4k views
    • 
    • GeorgeCarey
    • February 3, 2016

17. ASA20N dimensions

    By robindave, January 30, 2016
    • 1 reply
    • 1.2k views
    • 
    • Gerald
    • February 1, 2016

18. Collimation of 10N

    By pesa, August 24, 2015
    • 9 replies
    • 2.9k views
    • 
    • Waldemar
    • September 13, 2015

19. Secondary Offset

    By prinzpaul, August 28, 2015
    • 0 replies
    • 1.3k views
    • 
    • prinzpaul
    • August 28, 2015

20. ASA 10N secondary mirror removal and remount

    By MarkS, November 21, 2014
    • 2 replies
    • 1.8k views
    • 
    • MarkS
    • November 24, 2014

21. weird airy disc pattern - what can cause this?

    By Konihlav, September 23, 2013
    • 18 replies
    • 7k views
    • 
    • GeorgeCarey
    • September 11, 2014

22. ASA N 16" f/3.6 collimation screws

    By joacofab, July 8, 2014
    • 1 reply
    • 1.8k views
    • 
    • admin
    • July 10, 2014

23. Corner artifacts with N10 and SBIG STL-11000

    By rbrecher, March 3, 2014   

    • Flat
    • N10
    • (and 1 more)

      Tagged with:

      • Flat
      • N10
      • STL-11000
    • 3 replies
    • 2.6k views
    • 
    • Konihlav
    • March 13, 2014

24. Dew Control on ASA10N

    By MarkS, December 3, 2013
    • 6 replies
    • 1.9k views
    • 
    • MarkS
    • March 3, 2014

25. How and when do you use the fan?

    By w0mbat, October 10, 2013
    • 4 replies
    • 1.7k views
    • 
    • MarkS
    • February 4, 2014