Today's SUN (20180829) | PST Stage 2 Mod first light

this is the main message area for anything solar :)
Post Reply
User avatar
pedro
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 6264
Joined: Sun May 01, 2016 8:26 pm
Location: Portugal
Contact:

Today's SUN (20180829) | PST Stage 2 Mod first light

Post by pedro » Wed Aug 29, 2018 2:15 pm

Today's SUN (20180829) | PST Stage 2 Mod first light. I could only image a faint prom

WEBLINK:
http://re.apaaweb.com/sun_h_alpha_2018-08.html

Tried the PST Stage 2 Mod for the first time today on an almost blank sun. Check out some images below (TMB100 F/8, PST Stage 2 Mod)


PST STAGE 2 MOD | Pedro RÉ
TMB100 F/8, Baader 110mm ERF, PST etalon, Coronado BF15
http://re.apaaweb.com

Image
IMAGING SETUPS

Image
IMAGING SETUPS (PST Stage 2 Mod)

Image
IMAGING SETUPS (PST Stage 2 Mod)

Image
IMAGING SETUPS (PST Stage 2 Mod)

Image
SUN (20180829). TMB100 F/8 H-alpha. PST Stage 2 Mod (Baader 110mm ERF, PST etalon, BF15, X2 Bawlow (@X1.4), PGR GRASSHOPPER 3 GS3-U3-28S4M

Image
SUN (20180829) H-alpha DISK & PROMS (09:00 UTC). LUNT60, BF30, PGR GRASSHOPPER 3 GS3-U3-28S4M

Image
SUN (20180829) H-alpha DISK & PROMS (09:00 UTC). TV101 F/5.4, SM60, BF30, PGR GRASSHOPPER 3 GS3-U3-28S4M

Image
SUN (20180829) H-alpha DISK & PROMS (09:00 UTC). TV101 F/5.4, SM60, BF30, PGR GRASSHOPPER 3 GS3-U3-28S4M

Image
SUN (20180829) CaK PROMS (09:00 UTC). TV101 F/5.4, LUNT 1200 CaK Module, PGR GRASSHOPPER 3 GS3-U3-28S4M

Image
SUN (20180829) WL, CaK & H-alpha (09:00 UTC). TV101 F/5.4, LUNT 1200 CaK Module, SM60, BF30, PGR GRASSHOPPE 3 GS3-U3-28S4M
Last edited by pedro on Wed Aug 29, 2018 7:28 pm, edited 1 time in total.

bart1805
Im an EXPERT!
Im an EXPERT!
Posts: 311
Joined: Mon Feb 06, 2017 9:04 pm
Location: The Netherlands

Re: Today's SUN (20180829) | PST Stage 2 Mod first light

Post by bart1805 » Wed Aug 29, 2018 2:42 pm

Nice start! And it seems the distance between etalon and camera is a bit bigger now. At what position did you place the front lens of the etalon? I positioned the etalon in the Skywatcher (also f/8) at minus 16 cm. Should be no problem at all with the TMB because of the huge backfocus.

User avatar
pedro
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 6264
Joined: Sun May 01, 2016 8:26 pm
Location: Portugal
Contact:

Re: Today's SUN (20180829) | PST Stage 2 Mod first light

Post by pedro » Wed Aug 29, 2018 3:12 pm

Thanks Bart

Visually I got great results even with a smaller distance (only one extension tube). It seems that the correct distance from the PST etalon is about 200mm. The soft spot is huge though

bart1805
Im an EXPERT!
Im an EXPERT!
Posts: 311
Joined: Mon Feb 06, 2017 9:04 pm
Location: The Netherlands

Re: Today's SUN (20180829) | PST Stage 2 Mod first light

Post by bart1805 » Wed Aug 29, 2018 3:31 pm

Yep the lenses are -200 and + 200.
So in a f/10 scope -200 is the perfect position of the frontlens. If you place the glasspath at -160, it is at -200 from the new focus point. So there where your etalon has to be.


User avatar
Montana
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 19790
Joined: Mon Oct 17, 2011 5:25 pm
Location: Cheshire, UK

Re: Today's SUN (20180829) | PST Stage 2 Mod first light

Post by Montana » Thu Aug 30, 2018 8:55 am

A nice set of images Pedro :bow the Sun does look rather blank ;)

Alexandra


User avatar
Valery
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 3050
Joined: Sun Nov 18, 2012 3:13 pm

Re: Today's SUN (20180829) | PST Stage 2 Mod first light

Post by Valery » Wed Sep 05, 2018 1:43 am

Congrats with the first light!
"Solar H alpha activity is the most dynamic and compelling thing you can see in a telescope, so spend accordingly." (c) Bob Yoesle.

Largest full size 185 - 356mm Dielectric Energy Rejection Filters (D-ERF) by ARIES Instruments.


Post Reply

Who is online

Users browsing this forum: MapleRidge and 2 guests