ASA Correctors & Accessories

29 topics in this forum

1. ASA 2" .73 Back Focus for 8" f4.0 (800mm) Native Newt

   By Tim Schaeffer, March 18
   • 0 replies
   • 317 views
   • 
   • Tim Schaeffer
   • March 18

2. ASA 2" .73 Back Focus for 12.5" f4.1 (1300mm) Native Newt

   By ccwoodruff, November 28, 2023
   • 1 reply
   • 166 views
   • 
   • photon
   • December 3, 2023

3. Asa 3" 0.73x corrector

   By giocasi, November 26, 2020
   • 3 replies
   • 1.2k views
   • 
   • Christophe
   • March 26, 2023

4. ASA 1.8x barlow for newton + original adapter

   By pepe30, November 15, 2022
   • 1 reply
   • 268 views
   • 
   • pepe30
   • March 8, 2023

5. ASA 3" Wynne corrector - coating failed

   By Jurij Stare, May 2, 2022
   • 1 reply
   • 506 views
   • 
   • Jurij Stare
   • May 6, 2022

6. Reduction factor from the SCT corrector much less than 0.77 - nearer 0.88.

   By William Shaw, January 31, 2022
   • 0 replies
   • 347 views
   • 
   • William Shaw
   • January 31, 2022

7. Search of 4" ASA field corrector for newtonian telescope

   By Michastro, January 29, 2021
   • 0 replies
   • 1.9k views
   • 
   • Michastro
   • January 29, 2021

8. vignetting of ASA 3" corrector

   By choi jong min, April 14, 2020
   • 4 replies
   • 955 views
   • 
   • Waldemar
   • April 20, 2020

9. Wynne corrector 3KORRW or 3KORRH8

   By -Amenophis-, December 20, 2019
   • 4 replies
   • 892 views
   • 
   • -Amenophis-
   • December 24, 2019

10. Mirror cell handles

    By -Amenophis-, March 11, 2019
    • 2 replies
    • 795 views
    • 
    • -Amenophis-
    • March 12, 2019

11. Adaptive Optics

    By Waldemar, May 19, 2017
    • 4 replies
    • 2.1k views
    • 
    • Waldemar
    • June 28, 2017

12. BACKFOCUS for ASA 2" Reducer Corrector 0.73x

    By -Amenophis-, March 14, 2016
    • 11 replies
    • 4.4k views
    • 
    • MarkS
    • June 25, 2017

13. QSI 5/6xx wsg on ASA N series Newton

    By chlopak, May 21, 2013   

    • QSI
    • 9 replies
    • 3.5k views
    • 
    • MarkS
    • September 28, 2016

14. 4 inch Cassegrain Field Flattener Back Focus

    By nakbrooks, September 7, 2016
    • 3 replies
    • 1.2k views
    • 
    • nakbrooks
    • September 7, 2016

15. Cleaning corrector lens

    By w0mbat, September 7, 2015
    • 4 replies
    • 1.4k views
    • 
    • MarkS
    • September 8, 2015

16. 4" Wynne corrector distance from primary

    By lukepower, March 28, 2015
    • 4 replies
    • 2k views
    • 
    • lukepower
    • August 10, 2015

17. asa 10 inchs rings bolt patern

    By charleslillo, July 23, 2015
    • 4 replies
    • 1.3k views
    • 
    • charleslillo
    • July 24, 2015

18. Corrector coma correction problem?

    By ChristerS, May 5, 2015   

    • coma
    • corrector
    • 2 replies
    • 2.3k views
    • 
    • ChristerS
    • May 6, 2015

19. Where do ASA field flatteners go in the image train

    By nakbrooks, October 19, 2014
    • 1 reply
    • 1.4k views
    • 
    • nakbrooks
    • October 19, 2014

20. ASA 2" Reducer Corrector 0.73x : Serial number graved ?

    By MartinN, April 28, 2014
    • 0 replies
    • 1.8k views
    • 
    • MartinN
    • April 28, 2014

21. Strange rings in Images

    By lukepower, February 24, 2014
    • 7 replies
    • 1.8k views
    • 
    • lukepower
    • February 25, 2014

22. ASA main mirror cover

    By lukepower, December 30, 2013   

    • mirror cover
    • 2 replies
    • 2.3k views
    • 
    • lukepower
    • January 6, 2014

23. ASA 2" coma corrector quattro x1.175

    By pimeson, December 24, 2013
    • 3 replies
    • 2.8k views
    • 
    • tommy_h
    • December 24, 2013

24. Thread size for ASA tube ring holes

    By dachurchill, October 19, 2013
    • 4 replies
    • 2k views
    • 
    • dachurchill
    • October 23, 2013

25. Preventing cable wrap with ASA rotator

    By nakbrooks, October 10, 2013
    • 0 replies
    • 1.3k views
    • 
    • nakbrooks
    • October 10, 2013