Some extreme details with the AR200/F8.5 - 21.05.

this is the main message area for anything solar :)
Post Reply
pupak
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 2472
Joined: Sun Jul 24, 2022 5:20 am
Has thanked: 4821 times
Been thanked: 4427 times

Some extreme details with the AR200/F8.5 - 21.05.

Post by pupak »

The morning after 8 o'clock is really good seeing and the two hours are worth using. I tried a different combination of etalonss and replaced TV4x with TZ4x and combination B1.6x and TZ4x.
The image is softer but more detailed. It will be a good combination for the AR200.
A few examples are in the attachment. Hope you like them.
Attachments
B1.6x and TZ4x
B1.6x and TZ4x
s2.jpg (558.43 KiB) Viewed 2435 times
B1.6x and TZ4x
B1.6x and TZ4x
s2c.jpg (975.92 KiB) Viewed 2435 times
B1.6x and TZ4x
B1.6x and TZ4x
s3.jpg (701.86 KiB) Viewed 2435 times
B1.6x and TZ4x
B1.6x and TZ4x
s3c.jpg (1.09 MiB) Viewed 2435 times
B1.6x and TZ4x
B1.6x and TZ4x
s4.jpg (592.95 KiB) Viewed 2435 times
B1.6x and TZ4x
B1.6x and TZ4x
s4c.jpg (926.12 KiB) Viewed 2435 times
B1.6x and TZ4x
B1.6x and TZ4x
s5.jpg (645.65 KiB) Viewed 2435 times
B1.6x and TZ4x
B1.6x and TZ4x
s5c.jpg (938.38 KiB) Viewed 2435 times
TZ4x
TZ4x
sx2.jpg (312.97 KiB) Viewed 2435 times
TZ4x
TZ4x
sx2c.jpg (462.4 KiB) Viewed 2435 times
TZ4x
TZ4x
sx3.jpg (767 KiB) Viewed 2435 times
TZ4x
TZ4x
sx3c.jpg (1.11 MiB) Viewed 2435 times


I do not look at the sky with the eyes of an astronomer, but of a person looking for the beauty of nature.
User avatar
rigel123
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 8144
Joined: Thu Apr 08, 2021 9:26 pm
Location: Mason, OH
Has thanked: 9411 times
Been thanked: 9615 times
Contact:

Re: Some extreme details with the AR200/F8.5 - 21.05.

Post by rigel123 »

These are beautiful Petr, great processing!


Warren

Lunt LS60T DS
Orion ED80T CF
Meade ETX LS6
Lunt CaK BF1200
Lunt WL Wedge
Baader Photographic Film
ASI174MM
Skyris 236M
Player One Saturn-M SQR

https://www.astrobin.com/users/rigel123/
User avatar
Valtori
Almost There...
Almost There...
Posts: 818
Joined: Tue Jun 10, 2014 9:12 am
Location: Moscow, Russia
Has thanked: 363 times
Been thanked: 227 times

Re: Some extreme details with the AR200/F8.5 - 21.05.

Post by Valtori »

Very picturesque images, Petr!!

Val


User avatar
Montana
Librarian
Librarian
Posts: 35160
Joined: Mon Oct 17, 2011 5:25 pm
Location: Cheshire, UK
Has thanked: 18936 times
Been thanked: 9266 times

Re: Some extreme details with the AR200/F8.5 - 21.05.

Post by Montana »

Wow!! these are absolutely stunning :bow :bow :bow

Alexandra


vineyard
Almost There...
Almost There...
Posts: 607
Joined: Wed Feb 02, 2022 11:08 am
Has thanked: 947 times
Been thanked: 911 times

Re: Some extreme details with the AR200/F8.5 - 21.05.

Post by vineyard »

Jawdroppingly good. In fact no, jawdroppingly great. 2 & 4 are my favourites.


pupak
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 2472
Joined: Sun Jul 24, 2022 5:20 am
Has thanked: 4821 times
Been thanked: 4427 times

Re: Some extreme details with the AR200/F8.5 - 21.05.

Post by pupak »

Thank you all for your positive comments.
Sometimes I wonder if it's not boring for you anymore. :?:


I do not look at the sky with the eyes of an astronomer, but of a person looking for the beauty of nature.
vineyard
Almost There...
Almost There...
Posts: 607
Joined: Wed Feb 02, 2022 11:08 am
Has thanked: 947 times
Been thanked: 911 times

Re: Some extreme details with the AR200/F8.5 - 21.05.

Post by vineyard »

pupak wrote: Tue May 21, 2024 8:12 pm
Sometimes I wonder if it's not boring for you anymore. :?:
No way. That would be like saying that it got boring watching all those ridiculous goals Messi used to score!


DavidP
Almost There...
Almost There...
Posts: 527
Joined: Sun Mar 08, 2020 9:25 pm
Location: Austin Texas
Has thanked: 170 times
Been thanked: 408 times

Re: Some extreme details with the AR200/F8.5 - 21.05.

Post by DavidP »

These are exceptional even for you Petr.
Amazing detail.
What etalons were used?


ChrisHalpha2017
Im an EXPERT!
Im an EXPERT!
Posts: 220
Joined: Mon May 02, 2022 1:19 pm
Has thanked: 348 times
Been thanked: 285 times

Re: Some extreme details with the AR200/F8.5 - 21.05.

Post by ChrisHalpha2017 »

amazing in details and contrast ^^


spectro-coronographe ,Bresser 127/1200 ; Bresser 102/1350 , ASI 178MM
User avatar
DeepSolar64
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 19736
Joined: Thu Sep 05, 2019 12:19 am
Location: Lowndesville S.C.
Has thanked: 18657 times
Been thanked: 17801 times

Re: Some extreme details with the AR200/F8.5 - 21.05.

Post by DeepSolar64 »

Petr,
These are very nice. I always enjoy your exquisite close ups!

James


Lunt 8x32 SUNoculars
Orion 70mm Solar Telescope
Celestron AstroMaster Alt/Az Mount
Meade Coronado SolarMax II 60 DS
Meade Coronado SolarMax II 90 DS
Meade Coronado AZS Alt/Az Mount
Astro-Tech AT72EDII with Altair solar wedge
Celestron NexStar 102GT with Altair solar wedge
Losmandy AZ8 Alt/Az Mount
Sky-Watcher AZGTI Alt-Az GoTo mount
Cameras: ZWO ASI178MM, PGR Grasshopper, PGR Flea
Lunt, Coronado, TeleVue, Orion and Meade eyepieces

Image Visual Observer
" Way more fun to see it! "
pupak
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 2472
Joined: Sun Jul 24, 2022 5:20 am
Has thanked: 4821 times
Been thanked: 4427 times

Re: Some extreme details with the AR200/F8.5 - 21.05.

Post by pupak »

DavidP wrote: Tue May 21, 2024 9:02 pm What etalons were used?
I used a 50mm pressure Lunt from an LS80 and a Quark combo. Lunt does not have collimating lenses. I recently built a 200mm telescope for a friend and used the same combination of etalons. It works better than the tilting LS40.


I do not look at the sky with the eyes of an astronomer, but of a person looking for the beauty of nature.
User avatar
Martin_S
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 1971
Joined: Sat Mar 16, 2019 12:34 am
Location: Brisbane , Australia
Has thanked: 1094 times
Been thanked: 3265 times

Re: Some extreme details with the AR200/F8.5 - 21.05.

Post by Martin_S »

Great imaging Petr


H alpha : ,Skywatcher 120mm F8 open frame refractor, a tilted 2" 7nm H-alpha filter as a sub energy rejection filter, Baader TZ4 telecentric focal extender, Player One energy rejection filter, Combo Quark Chromosphere, Naked PST etalon for double stacking, ASI74mm camera
User avatar
marktownley
Librarian
Librarian
Posts: 43456
Joined: Tue Oct 18, 2011 5:27 pm
Location: Brierley Hills, UK
Has thanked: 22072 times
Been thanked: 11242 times
Contact:

Re: Some extreme details with the AR200/F8.5 - 21.05.

Post by marktownley »

Excellent closeups Petr!


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!
Hughsie
Ohhhhhh My!
Ohhhhhh My!
Posts: 107
Joined: Fri Jun 05, 2020 6:01 pm
Location: North Essex
Has thanked: 497 times
Been thanked: 400 times
Contact:

Re: Some extreme details with the AR200/F8.5 - 21.05.

Post by Hughsie »

Just beautiful.

I always look forward to your posts and to see what gems you have for us.


Lunt 60mm DS TH⍺ B1200CPT.
ZWO ASI 174mm & tilt adapter.
SkyWatcher EQ6R-Pro.
SharpCap Pro.
Various Powermates and Barlows.
One cat with a love of tripod legs.

https://www.astrobin.com/users/hughsie/collections/
User avatar
Carbon60
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 14570
Joined: Wed Mar 07, 2012 12:33 pm
Location: Lancashire, UK
Has thanked: 8897 times
Been thanked: 8681 times

Re: Some extreme details with the AR200/F8.5 - 21.05.

Post by Carbon60 »

Absolutely stunning, Petr. Breath-taking details.

Stu.


H-alpha, WL and Ca II K imaging kit for various image scales.
Fluxgate Magnetometers (1s and 150s Cadence).
Radio meteor detector.
More images at http://www.flickr.com/photos/solarcarbon60/
pupak
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 2472
Joined: Sun Jul 24, 2022 5:20 am
Has thanked: 4821 times
Been thanked: 4427 times

Re: Some extreme details with the AR200/F8.5 - 21.05.

Post by pupak »

Thank you all. :bow
It was really two exceptional days when the image on the monitor stood like nails and it was possible to focus well. The temperating of the AR200 is not very long, and when the wind is not strong, the images are very detailed. The Chinese achromat tuned to H-a by the Czech optician does a great job. Unfortunately, my back won't allow me to work with the ISTAR 225 right now. The bent AR200 is still usable for me for now. I will have to say goodbye to ISTAR. Age catches up with everyone.
Attachments
AR200/F8.5
AR200/F8.5
ar200.jpg (763.48 KiB) Viewed 2180 times


I do not look at the sky with the eyes of an astronomer, but of a person looking for the beauty of nature.
User avatar
Valery
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 4067
Joined: Sun Nov 18, 2012 3:13 pm
Has thanked: 157 times
Been thanked: 898 times

Re: Some extreme details with the AR200/F8.5 - 21.05.

Post by Valery »

pupak wrote: Wed May 22, 2024 4:45 am Lunt does not have collimating lenses.
How does it works? No pressure tuning?


"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.
pupak
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 2472
Joined: Sun Jul 24, 2022 5:20 am
Has thanked: 4821 times
Been thanked: 4427 times

Re: Some extreme details with the AR200/F8.5 - 21.05.

Post by pupak »

The blue tube leads to the electronic pressure regulator. The pressure is controlled remotely.
Etalon naturally has two plane-parallel glasses instead of collimating lenses.
Last edited by pupak on Wed May 22, 2024 10:55 am, edited 1 time in total.


I do not look at the sky with the eyes of an astronomer, but of a person looking for the beauty of nature.
User avatar
ffellah
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 11749
Joined: Mon Oct 27, 2014 6:46 pm
Location: Westport, CT USA
Has thanked: 9886 times
Been thanked: 6587 times

Re: Some extreme details with the AR200/F8.5 - 21.05.

Post by ffellah »

You have some amazing closeups here, Petr ! Sharp and beautifully detailed.

Franco


DavidP
Almost There...
Almost There...
Posts: 527
Joined: Sun Mar 08, 2020 9:25 pm
Location: Austin Texas
Has thanked: 170 times
Been thanked: 408 times

Re: Some extreme details with the AR200/F8.5 - 21.05.

Post by DavidP »

Looking at these again, I just can’t get over the detail within the umbrae.
Can I ask what are the typical exposure times you are using with this setup? Much gain?
Again, thank you for sharing.


User avatar
KMH
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 1264
Joined: Sat Feb 22, 2014 4:45 pm
Has thanked: 713 times
Been thanked: 914 times

Re: Some extreme details with the AR200/F8.5 - 21.05.

Post by KMH »

Wow - those are really amazing!

Kevin


pupak
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 2472
Joined: Sun Jul 24, 2022 5:20 am
Has thanked: 4821 times
Been thanked: 4427 times

Re: Some extreme details with the AR200/F8.5 - 21.05.

Post by pupak »

Thank you.
Last edited by pupak on Wed May 22, 2024 6:58 pm, edited 2 times in total.


I do not look at the sky with the eyes of an astronomer, but of a person looking for the beauty of nature.
pupak
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 2472
Joined: Sun Jul 24, 2022 5:20 am
Has thanked: 4821 times
Been thanked: 4427 times

Re: Some extreme details with the AR200/F8.5 - 21.05.

Post by pupak »

DavidP wrote: Wed May 22, 2024 6:00 pm Can I ask what are the typical exposure times you are using with this setup? Much gain?
The Quark that was used in this setup has 2x more attenuation in H-a than my other Quark in the LS40 setup, so the exposure length was 15-18ms and the gain around 200. I didn't want to ruin my carefully tuned setup with the LS40 for testing, but next time i will do it because the results could be even better with shorter exposure and lower gain.


I do not look at the sky with the eyes of an astronomer, but of a person looking for the beauty of nature.
User avatar
pdmphoton
Ohhhhhh My!
Ohhhhhh My!
Posts: 181
Joined: Mon Jun 21, 2021 5:05 am
Location: Meadview, AZ
Has thanked: 263 times
Been thanked: 537 times

Re: Some extreme details with the AR200/F8.5 - 21.05.

Post by pdmphoton »

Petr,
One word "Exquisite" !! Just beautiful to look at and get lost in. Never tired of seeing images of this caliber.
Paulm


Lunt LS80Tha DS
Lunt 130MT DS
APM 140 Doublet
Skywatcher 180mm Mak
Celestron C11 XLT
ZWO 174 and 183 Mono
iOptron CEM120
Hinode Solar Guider - Airylab SSM
Oak
Ohhhhhh My!
Ohhhhhh My!
Posts: 160
Joined: Mon Feb 07, 2022 6:16 pm
Has thanked: 308 times
Been thanked: 268 times

Re: Some extreme details with the AR200/F8.5 - 21.05.

Post by Oak »

Very nice work!!


pupak
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 2472
Joined: Sun Jul 24, 2022 5:20 am
Has thanked: 4821 times
Been thanked: 4427 times

Re: Some extreme details with the AR200/F8.5 - 21.05.

Post by pupak »

I won't start a new thread for this. I tried another Quark but the weather was against it. Seeing was an order of magnitude worse than yesterday and even when I got down to half the shutter speed and lower gain, the haze destroyed most of the detail. So just five photos for example.
Attachments
IMX429
IMX429
s1.jpg (714.45 KiB) Viewed 2004 times
IMX429
IMX429
s1c.jpg (1.1 MiB) Viewed 2004 times
IMX429
IMX429
s2.jpg (668.42 KiB) Viewed 2004 times
IMX429
IMX429
s2c.jpg (1.07 MiB) Viewed 2004 times
IMX429
IMX429
s3.jpg (161.8 KiB) Viewed 2004 times
IMX429
IMX429
s3c.jpg (301.49 KiB) Viewed 2004 times
IMX533
IMX533
ss1.jpg (580.05 KiB) Viewed 2004 times
IMX533
IMX533
ss1c.jpg (840.05 KiB) Viewed 2004 times
IMX533
IMX533
ss2.jpg (768.6 KiB) Viewed 2004 times
IMX533
IMX533
ss2c.jpg (1.03 MiB) Viewed 2004 times


I do not look at the sky with the eyes of an astronomer, but of a person looking for the beauty of nature.
User avatar
DeepSolar64
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 19736
Joined: Thu Sep 05, 2019 12:19 am
Location: Lowndesville S.C.
Has thanked: 18657 times
Been thanked: 17801 times

Re: Some extreme details with the AR200/F8.5 - 21.05.

Post by DeepSolar64 »

It is amazing that you do so well with closeups in poor seeing. I can never pull that off. What is your secret!

James


Lunt 8x32 SUNoculars
Orion 70mm Solar Telescope
Celestron AstroMaster Alt/Az Mount
Meade Coronado SolarMax II 60 DS
Meade Coronado SolarMax II 90 DS
Meade Coronado AZS Alt/Az Mount
Astro-Tech AT72EDII with Altair solar wedge
Celestron NexStar 102GT with Altair solar wedge
Losmandy AZ8 Alt/Az Mount
Sky-Watcher AZGTI Alt-Az GoTo mount
Cameras: ZWO ASI178MM, PGR Grasshopper, PGR Flea
Lunt, Coronado, TeleVue, Orion and Meade eyepieces

Image Visual Observer
" Way more fun to see it! "
User avatar
MAURITS
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 9028
Joined: Tue Nov 27, 2018 4:37 pm
Location: Belgium
Has thanked: 2651 times
Been thanked: 5186 times
Contact:

Re: Some extreme details with the AR200/F8.5 - 21.05.

Post by MAURITS »

Beautiful close ups Petr.


Regards,
Maurits

Vista del Cielo Observatory

www.vistadelcielo.be
pupak
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 2472
Joined: Sun Jul 24, 2022 5:20 am
Has thanked: 4821 times
Been thanked: 4427 times

Re: Some extreme details with the AR200/F8.5 - 21.05.

Post by pupak »

I don't know, James, but these photos aren't exactly ideal examples of close-up photography. The basis is good optics with a large aperture, but above all good seeing. If it isn't, no magic will help. A comparison with the images from yesterday clearly proves this.


I do not look at the sky with the eyes of an astronomer, but of a person looking for the beauty of nature.
User avatar
DeepSolar64
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 19736
Joined: Thu Sep 05, 2019 12:19 am
Location: Lowndesville S.C.
Has thanked: 18657 times
Been thanked: 17801 times

Re: Some extreme details with the AR200/F8.5 - 21.05.

Post by DeepSolar64 »

Petr,
You still do remarkably well.

James


Lunt 8x32 SUNoculars
Orion 70mm Solar Telescope
Celestron AstroMaster Alt/Az Mount
Meade Coronado SolarMax II 60 DS
Meade Coronado SolarMax II 90 DS
Meade Coronado AZS Alt/Az Mount
Astro-Tech AT72EDII with Altair solar wedge
Celestron NexStar 102GT with Altair solar wedge
Losmandy AZ8 Alt/Az Mount
Sky-Watcher AZGTI Alt-Az GoTo mount
Cameras: ZWO ASI178MM, PGR Grasshopper, PGR Flea
Lunt, Coronado, TeleVue, Orion and Meade eyepieces

Image Visual Observer
" Way more fun to see it! "
User avatar
eroel
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 9524
Joined: Mon Dec 19, 2011 10:45 pm
Location: México D.F.
Been thanked: 5120 times

Re: Some extreme details with the AR200/F8.5 - 21.05.

Post by eroel »

Petr:
Superb resolution and beautiful setup.
Best regards and thanks.
Eric.


User avatar
DanielBrousseau
Ohhhhhh My!
Ohhhhhh My!
Posts: 108
Joined: Wed Sep 13, 2017 12:36 pm
Location: Québec, Canada
Been thanked: 163 times
Contact:

Re: Some extreme details with the AR200/F8.5 - 21.05.

Post by DanielBrousseau »

Amazing....should I quit....


Phantom 140 f/6.5, SW newton 254mm f/5, Quark Chromosphere, Lunt 60mm Universal, Baader ceramic wedge, ASI174 mono, ASI294 mono, ASI290 mono,
Sherbrooke, Québec, Canada
User avatar
marktownley
Librarian
Librarian
Posts: 43456
Joined: Tue Oct 18, 2011 5:27 pm
Location: Brierley Hills, UK
Has thanked: 22072 times
Been thanked: 11242 times
Contact:

Re: Some extreme details with the AR200/F8.5 - 21.05.

Post by marktownley »

Nice additions Petr and always nice to see your scope.


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!
User avatar
solar
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 2623
Joined: Sun Mar 24, 2013 7:13 pm
Has thanked: 315 times
Been thanked: 1675 times

Re: Some extreme details with the AR200/F8.5 - 21.05.

Post by solar »

Exceptional Petr.


Vixen 130ss SolarMax 90 BF30 EQ6 Pro, LX200 14, C8 CG5, Megrez80, Lunt 100 DS. EQ 8
ASI 120mm 290mm 432mm Lunt B1800 Cal-K + other stuff.

Skywatcher 150mm PST Mod2
User avatar
Valery
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 4067
Joined: Sun Nov 18, 2012 3:13 pm
Has thanked: 157 times
Been thanked: 898 times

Re: Some extreme details with the AR200/F8.5 - 21.05.

Post by Valery »

pupak wrote: Thu May 23, 2024 12:41 pm I don't know, James, but these photos aren't exactly ideal examples of close-up photography. The basis is good optics with a large aperture, but above all good seeing. If it isn't, no magic will help. A comparison with the images from yesterday clearly proves this.
Peter, nice images! I took a closer look at your images from these two days. And in both cases the resolution limiting factor was not the seeing, but aperture size. Lucky imaging and post processing do a great job to minimize the seeing destructive factor and the limiting factor is diffraction on an aperture. One way or another, earlier or later one will catch a good seeing. But this is not possible with diffraction. Only aperture diameter increasing can help. Refactors or newtonians are not the only telescopes around. A larger SCT with front mounted ERF will easily do the job. If a larger refractors than 200mm are not for you due to age, then C11 with optimized imaging train can do the job with easy.


"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.
pupak
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 2472
Joined: Sun Jul 24, 2022 5:20 am
Has thanked: 4821 times
Been thanked: 4427 times

Re: Some extreme details with the AR200/F8.5 - 21.05.

Post by pupak »

Thanks for the qualified opinion, Valery, but I have no ambitions to become a professional sun photographer.
It is true that the C11 with full DERF would produce better photos for me about 2 times a year, but if I could handle ISTAR 228, I think it wouldn't be much worse. I make do with what I have and it doesn't bother me at all that someone else takes a better photo. It's my hobby.


I do not look at the sky with the eyes of an astronomer, but of a person looking for the beauty of nature.
User avatar
arnedanielsen
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 8098
Joined: Fri Apr 18, 2014 10:42 pm
Location: Vestby, Norway
Has thanked: 6987 times
Been thanked: 8048 times

Re: Some extreme details with the AR200/F8.5 - 21.05.

Post by arnedanielsen »

Stunning results, Petr!


Best regards,
Arne
--
AstroBin: https://www.astrobin.com/users/arnedani/
User avatar
Valery
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 4067
Joined: Sun Nov 18, 2012 3:13 pm
Has thanked: 157 times
Been thanked: 898 times

Re: Some extreme details with the AR200/F8.5 - 21.05.

Post by Valery »

pupak wrote: Sat May 25, 2024 7:03 am Thanks for the qualified opinion, Valery, but I have no ambitions to become a professional sun photographer.
It is true that the C11 with full DERF would produce better photos for me about 2 times a year, but if I could handle ISTAR 228, I think it wouldn't be much worse. I make do with what I have and it doesn't bother me at all that someone else takes a better photo. It's my hobby.
Your place allows you to image the sun at a high resolution far more often than 2 times a year. You are the most frequent poster here with high res. pictures with 6" to 10" apertures. And, I believe you can do it even more frequent if to not miss clear mornings. Mild climate, not too hot, not too cold, grassy lowns = a lot of seeing early to mid morning.
C11 is the best telescope in factor telescope per dollar divide on it's weight and length. EQ-6 is enough for this telescope. 9" refractor is far less portable.


"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.
pupak
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 2472
Joined: Sun Jul 24, 2022 5:20 am
Has thanked: 4821 times
Been thanked: 4427 times

Re: Some extreme details with the AR200/F8.5 - 21.05.

Post by pupak »

I don't know, Valery. I had an 8" Triband and used it twice a year. Long refractors are much more resistant to poor seeing than catadiopric systems. Also, I doubt I could get the money for a 300mm DERF and C11. That's way beyond my limits. Good luck in that a person is satisfied with what he has and does not deal with what he cannot have.


I do not look at the sky with the eyes of an astronomer, but of a person looking for the beauty of nature.
DavidP
Almost There...
Almost There...
Posts: 527
Joined: Sun Mar 08, 2020 9:25 pm
Location: Austin Texas
Has thanked: 170 times
Been thanked: 408 times

Re: Some extreme details with the AR200/F8.5 - 21.05.

Post by DavidP »

pupak wrote: Mon May 27, 2024 5:28 am Good luck in that a person is satisfied with what he has and does not deal with what he cannot have.
Good luck. And wisdom.
Your words are words to live bye


User avatar
banjo
Way More Fun to Share It!!
Way More Fun to Share It!!
Posts: 1501
Joined: Sat Sep 17, 2016 12:38 pm
Location: France
Has thanked: 2167 times
Been thanked: 2964 times

Re: Some extreme details with the AR200/F8.5 - 21.05.

Post by banjo »

super.gif
super.gif (23.66 KiB) Viewed 1006 times


bresser/messier 150/1200 (or 200/1800 Istar ) Mod -D-Erf 160mm intern-glasspath 1.25-etalon Pst barlow X2 ASI174
https://astropol.pagesperso-orange.fr/b ... 9/best2019
sorry for my English translators google :mrgreen:
Post Reply