High resolution refractor 204mm WL/ H-alpha seeing 6-7 /10

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Philippe TOSI
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High resolution refractor 204mm WL/ H-alpha seeing 6-7 /10

Post by Philippe TOSI »

Hello, I'm happy !
today despite a big temperature the seeing was incredible 6 to 7/10 with low clouds ...
i propose to you my last images.
Setup :
204 mm F/10 Istar Optical refractor pst modified 1 A+ bf5 coronado + Barlow 1.8x / skynyx 2.1 M (100 images /view)
mosaïc of 8 and 7 view.
process AS2, RGX6, CS5.
WL : Baader hershelwedge + barlow 3x + 6cm of backfocus / continuum filter.
Best regards.

Phil
My web site http://www.photoastro.com

Here you can see the little white spots between the granulation.

Image

Image

Image

Here with seeing 7/10...

Image

colored version :

Image

and seeing 5/10...

Image
Last edited by Philippe TOSI on Fri Jul 03, 2015 7:24 pm, edited 1 time in total.


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michael.h.f.wilkinson
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Re: High resolution refractor 204mm WL/ H-alpha seeing 6-7

Post by michael.h.f.wilkinson »

Stunning images!


Solar kit: GP-C8 with Thousand Oaks Solar filter, APM 80mm F/6, Lunt Herschel Wedge, Solar Spectrum 0.3Å H-alpha filter, Beloptic Tri-Band ERF (80mm free aperture), Thousand Oaks 90mm ERF, Coronado SolarMax II 60mm with Double Stack Unit. Lunt straight B1800 Ca-K module.
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Re: High resolution refractor 204mm WL/ H-alpha seeing 6-7

Post by Derek Klepp »

Even for the aperture that's a great result.Always good when the seeing plays ball.


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Valery
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Re: High resolution refractor 204mm WL/ H-alpha seeing 6-7

Post by Valery »

Amazingly good white light images!

Not sure what happens lately, your earlier (spring) H-a images were more defined. May be your PST etalon works less good
at higher temperatures? My PST etalon, vise versa, works better at high temperatures and much worser at a winter time.
On the other hands, the PST etalon owned by a friend of mine, work excellently at a winter time and now it is almost useless for him !!!


Valery.


"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.
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Re: High resolution refractor 204mm WL/ H-alpha seeing 6-7

Post by KMH »

Fantastic shots!
Kevin


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Re: High resolution refractor 204mm WL/ H-alpha seeing 6-7

Post by marktownley »

These are brilliant!


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http://brierleyhillsolar.blogspot.co.uk/
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Re: High resolution refractor 204mm WL/ H-alpha seeing 6-7

Post by grimble_cornet »

Superb as always


.

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Re: High resolution refractor 204mm WL/ H-alpha seeing 6-7

Post by pedro »

Fantastic resolution Philippe

Amicalement


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Re: High resolution refractor 204mm WL/ H-alpha seeing 6-7

Post by Montana »

My .... *****!!!! I saw this on the front page :bow :bow :bow :bow :bow :bow :bow

Alexandra :bow2


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Philippe TOSI
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Re: High resolution refractor 204mm WL/ H-alpha seeing 6-7

Post by Philippe TOSI »

wow !
Thank you Alexandra and the others too...
very cool !
the pst indeed woks better by low température...


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Re: High resolution refractor 204mm WL/ H-alpha seeing 6-7

Post by Valery »

And congratulations with the SPOD!
Philippe TOSI wrote: the pst indeed woks better by low température...
Not all PST etalons work better at lower temp. My is better at summer time and poor at the 10C and below.
My friend's one is excellent below 10C and poor at the summer time!


Valery.


"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.
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Philippe TOSI
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Re: High resolution refractor 204mm WL/ H-alpha seeing 6-7

Post by Philippe TOSI »

the pst wath better and more regular in 2006-2007.
but now for the quality it's like poker...


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Philippe TOSI
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Re: High resolution refractor 204mm WL/ H-alpha seeing 6-7

Post by Philippe TOSI »

bug...sorry


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Re: High resolution refractor 204mm WL/ H-alpha seeing 6-7

Post by Carbon60 »

Superb images, Philippe, both WL and Ha. Congratulations on SPOD.

Stu.


H-alpha, WL and Ca II K imaging kit for various image scales.
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More images at http://www.flickr.com/photos/solarcarbon60/
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Re: High resolution refractor 204mm WL/ H-alpha seeing 6-7

Post by Philippe TOSI »

Thank you Stu. ;)


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Re: High resolution refractor 204mm WL/ H-alpha seeing 6-7

Post by marktownley »

Valery wrote:And congratulations with the SPOD!
Philippe TOSI wrote: the pst indeed woks better by low température...
Not all PST etalons work better at lower temp. My is better at summer time and poor at the 10C and below.
My friend's one is excellent below 10C and poor at the summer time!


Valery.
All the PST etalons i've tried have all been different - I guess these 'wide' working windows are the norm with essentially the worlds most effective budget etalon (for modding). My DS40 etalon loves it once the ambient temperature is above 20c, in winter time I struggle with it...


Image
http://brierleyhillsolar.blogspot.co.uk/
Solar images, a collection of all the most up to date live solar data on the web, imaging & processing tutorials - please take a look!
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Philippe TOSI
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Re: High resolution refractor 204mm WL/ H-alpha seeing 6-7

Post by Philippe TOSI »

ok !
all that is very intersting and instructive...
Thank's ;)


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