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
IMAGING SETUPS
IMAGING SETUPS (PST Stage 2 Mod)
IMAGING SETUPS (PST Stage 2 Mod)
IMAGING SETUPS (PST Stage 2 Mod)
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
SUN (20180829) H-alpha DISK & PROMS (09:00 UTC). LUNT60, BF30, PGR GRASSHOPPER 3 GS3-U3-28S4M
SUN (20180829) H-alpha DISK & PROMS (09:00 UTC). TV101 F/5.4, SM60, BF30, PGR GRASSHOPPER 3 GS3-U3-28S4M
SUN (20180829) H-alpha DISK & PROMS (09:00 UTC). TV101 F/5.4, SM60, BF30, PGR GRASSHOPPER 3 GS3-U3-28S4M
SUN (20180829) CaK PROMS (09:00 UTC). TV101 F/5.4, LUNT 1200 CaK Module, PGR GRASSHOPPER 3 GS3-U3-28S4M
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
Today's SUN (20180829) | PST Stage 2 Mod first light
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Today's SUN (20180829) | PST Stage 2 Mod first light
Last edited by pedro on Wed Aug 29, 2018 7:28 pm, edited 1 time in total.
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Re: Today's SUN (20180829) | PST Stage 2 Mod first light
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.
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Re: Today's SUN (20180829) | PST Stage 2 Mod first light
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
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
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Re: Today's SUN (20180829) | PST Stage 2 Mod first light
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.
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.
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Re: Today's SUN (20180829) | PST Stage 2 Mod first light
Thanks again Bart
I will have to do a few of measurements
I will have to do a few of measurements
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Re: Today's SUN (20180829) | PST Stage 2 Mod first light
A nice set of images Pedro the Sun does look rather blank
Alexandra
Alexandra
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Re: Today's SUN (20180829) | PST Stage 2 Mod first light
Thanks Alexandra
You're absolutely right, almost nothing to see, only a few faint proms
You're absolutely right, almost nothing to see, only a few faint proms
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Re: Today's SUN (20180829) | PST Stage 2 Mod first light
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.
Largest full size 185 - 356mm Dielectric Energy Rejection Filters (D-ERF) by ARIES Instruments.
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Re: Today's SUN (20180829) | PST Stage 2 Mod first light
Thanks Valery
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