Hi,
Here is the first Ha light image of the Mewlon 250.
Everything is not finely tuned yet. The electric focusing controling the secondary miror is a nightmare. If anyone knows how to change the original DC motor for a stepper moteur, this would be great !
In any case, the resolution improves compared to the C8 EdgeHD.
http://astrosurf.com/viladrich/astro/so ... 920-Ha.jpg
http://astrosurf.com/viladrich/astro/so ... 920-Ha.jpg
http://astrosurf.com/viladrich/astro/so ... 920-Ha.jpg
http://astrosurf.com/viladrich/astro/so ... 920-Ha.jpg
More to come ...
Mewlon 250 Halpha firt light / 28 May 2023
-
christian viladrich
- Way More Fun to Share It!!
- Posts: 2161
- Joined: Sun Jun 14, 2015 4:46 pm
- Location: France
- Has thanked: 1 time
- Been thanked: 2725 times
- Contact:
Mewlon 250 Halpha firt light / 28 May 2023
Christian Viladrich
Co-author of "Planetary Astronomy"
http://planetary-astronomy.com/
Editor of "Solar Astronomy"
http://www.astronomiesolaire.com/
Co-author of "Planetary Astronomy"
http://planetary-astronomy.com/
Editor of "Solar Astronomy"
http://www.astronomiesolaire.com/
-
pupak
- Way More Fun to Share It!!
- Posts: 2244
- Joined: Sun Jul 24, 2022 5:20 am
- Has thanked: 4419 times
- Been thanked: 4016 times
Re: Mewlon 250 Halpha firt light / 28 May 2023
Amazing photos. It can be seen that the Mewlon is a really high-quality device and the vision conditions must also be excellent. Such H-a details are not seen here very often.
This is every sun lover's dream come true.
Congratulations.
This is every sun lover's dream come true.
Congratulations.
I do not look at the sky with the eyes of an astronomer, but of a person looking for the beauty of nature.
-
pedro
- Way More Fun to Share It!!
- Posts: 12348
- Joined: Sun May 01, 2016 8:26 pm
- Location: Portugal
- Has thanked: 14 times
- Been thanked: 6751 times
- Contact:
Re: Mewlon 250 Halpha firt light / 28 May 2023
Fantastic resolution with the Mewlon 250. I sold mine a few years ago...
Pedro Re'
https://pedroreastrophotography.com/
https://pedroreastrophotography.com/
-
Rusted
- Way More Fun to Share It!!
- Posts: 1741
- Joined: Fri Jan 19, 2018 11:00 am
- Location: Central Denmark
- Has thanked: 8186 times
- Been thanked: 1943 times
- Contact:
Re: Mewlon 250 Halpha firt light / 28 May 2023
Superb images! All of them! Reference standard! 
http://fullerscopes.blogspot.dk/
H-alpha: Baader 160mm D-ERF, iStar 150/10 H-alpha objective, 2" Baader 35nm H-a, 2" Beloptik KG3,
Lunt 60MT etalon, Lunt B1200S2 BF, Assorted T-S GPCs or 2x "Shorty" Barlow, ZWO ASI174.
H-alpha: Baader 160mm D-ERF, iStar 150/10 H-alpha objective, 2" Baader 35nm H-a, 2" Beloptik KG3,
Lunt 60MT etalon, Lunt B1200S2 BF, Assorted T-S GPCs or 2x "Shorty" Barlow, ZWO ASI174.
-
AndiesHandyHandies
- Way More Fun to Share It!!
- Posts: 1464
- Joined: Fri Mar 30, 2018 6:46 am
- Location: Derbyshire UK
- Has thanked: 3329 times
- Been thanked: 1907 times
-
Dennis
- Way More Fun to Share It!!
- Posts: 1756
- Joined: Sat Apr 27, 2019 6:44 pm
- Location: Germany
- Has thanked: 3105 times
- Been thanked: 2204 times
Re: Mewlon 250 Halpha firt light / 28 May 2023
Congrats to the first light Ha images! Aperture rules.
A 290mm Baader D-ERF, thats interesting. Nice that they made it.
A 290mm Baader D-ERF, thats interesting. Nice that they made it.
Triband C9.25
H-a: 1-2 Lunt40 rear mounted
WL: Antlia 500nm/ 3nm, 393 nm/ 3nm
Ca-K: homebrew (includes 2x 1.5A filters, thanks Apollo), corrective lenses (thanks again Apollo)
Cameras: imx432 + imx462
Barlows:
-2x Gerd Düring 2.7x
-2x TMB 1.8x
H-a: 1-2 Lunt40 rear mounted
WL: Antlia 500nm/ 3nm, 393 nm/ 3nm
Ca-K: homebrew (includes 2x 1.5A filters, thanks Apollo), corrective lenses (thanks again Apollo)
Cameras: imx432 + imx462
Barlows:
-2x Gerd Düring 2.7x
-2x TMB 1.8x
-
Peterm
- Way More Fun to Share It!!
- Posts: 1231
- Joined: Tue Nov 22, 2022 2:17 am
- Location: Australia, Gold Coast, QLD
- Has thanked: 1825 times
- Been thanked: 1583 times
Re: Mewlon 250 Halpha firt light / 28 May 2023
Wonderful images.
Lunt 80Tha S/S & D/S / B1800; Quark Chromosphere; SkyWatcher 120 Evostar; Celestron SE6; Celestron AVX; Berlebach Planet; ZWO174MM & 432MM & 533MM; Powermate 5X; Lunt Solar Wedge; Hinode SG; Airy Labs SSM
Astrobin: https://www.astrobin.com/users/PeterM/
BOSS team: https://www.scienceinpublic.com.au/medi ... ia-release
Astrobin: https://www.astrobin.com/users/PeterM/
BOSS team: https://www.scienceinpublic.com.au/medi ... ia-release
-
marktownley
- Librarian
- Posts: 42648
- Joined: Tue Oct 18, 2011 5:27 pm
- Location: Brierley Hills, UK
- Has thanked: 20957 times
- Been thanked: 10589 times
- Contact:
Re: Mewlon 250 Halpha firt light / 28 May 2023
These are nice Christian!
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!
-
pupak
- Way More Fun to Share It!!
- Posts: 2244
- Joined: Sun Jul 24, 2022 5:20 am
- Has thanked: 4419 times
- Been thanked: 4016 times
Re: Mewlon 250 Halpha firt light / 28 May 2023
How long does Mewlon temper and what is the temperature stability when working in the sun? Is the setting stable or does it require frequent refocusing?
I do not look at the sky with the eyes of an astronomer, but of a person looking for the beauty of nature.
-
OlegLviv
- Almost There...
- Posts: 673
- Joined: Mon Sep 13, 2021 4:24 am
- Location: Ukraine/Lviv
- Has thanked: 928 times
- Been thanked: 952 times
Re: Mewlon 250 Halpha firt light / 28 May 2023
Perfect work!
https://www.facebook.com/oleg.lavigne/
https://www.astrobin.com/users/RamonLviv/
https://www.astroclub.kiev.ua/forum/ind ... ic=46758.0
Telescope: TS 152/900/Bresser 102/1350
Baader D-ERF 160MM
2xBaader 1.25 GPC
2xLunt 50mm
Lunt Cak B1200
Coronado BF15
Camera: Apollo Max 432M/ Apollo Mini 429M/Player One Mars II 462M/QHY 290MM
Mounh: 2xSky Watcher AZEQ6
Telecentric Lense: Televue Powermate 2/2.5x/4X/5X
https://www.astrobin.com/users/RamonLviv/
https://www.astroclub.kiev.ua/forum/ind ... ic=46758.0
Telescope: TS 152/900/Bresser 102/1350
Baader D-ERF 160MM
2xBaader 1.25 GPC
2xLunt 50mm
Lunt Cak B1200
Coronado BF15
Camera: Apollo Max 432M/ Apollo Mini 429M/Player One Mars II 462M/QHY 290MM
Mounh: 2xSky Watcher AZEQ6
Telecentric Lense: Televue Powermate 2/2.5x/4X/5X
-
ffellah
- Way More Fun to Share It!!
- Posts: 11348
- Joined: Mon Oct 27, 2014 6:46 pm
- Location: Westport, CT USA
- Has thanked: 9387 times
- Been thanked: 6199 times
-
christian viladrich
- Way More Fun to Share It!!
- Posts: 2161
- Joined: Sun Jun 14, 2015 4:46 pm
- Location: France
- Has thanked: 1 time
- Been thanked: 2725 times
- Contact:
Re: Mewlon 250 Halpha firt light / 28 May 2023
Thanks to all !
For some reason, for solar observation (i.e. in the morning from 9:00 to about 13:00). The focus position is rather stable. This was a really good surprise.
Before observation, the OTA is stored in a garage attached to my house. There the temperature is very close to ambiant external temperature.
This was indeed a possible issue. I also use the Mewlon 250 for Venus observation in the late afternoon. In that situation, I have fast variations of focus position.
For some reason, for solar observation (i.e. in the morning from 9:00 to about 13:00). The focus position is rather stable. This was a really good surprise.
Before observation, the OTA is stored in a garage attached to my house. There the temperature is very close to ambiant external temperature.
Christian Viladrich
Co-author of "Planetary Astronomy"
http://planetary-astronomy.com/
Editor of "Solar Astronomy"
http://www.astronomiesolaire.com/
Co-author of "Planetary Astronomy"
http://planetary-astronomy.com/
Editor of "Solar Astronomy"
http://www.astronomiesolaire.com/
-
christian viladrich
- Way More Fun to Share It!!
- Posts: 2161
- Joined: Sun Jun 14, 2015 4:46 pm
- Location: France
- Has thanked: 1 time
- Been thanked: 2725 times
- Contact:
Re: Mewlon 250 Halpha firt light / 28 May 2023
Indeed, it was very difficult to get one. I understand they are very difficult to make.
Christian Viladrich
Co-author of "Planetary Astronomy"
http://planetary-astronomy.com/
Editor of "Solar Astronomy"
http://www.astronomiesolaire.com/
Co-author of "Planetary Astronomy"
http://planetary-astronomy.com/
Editor of "Solar Astronomy"
http://www.astronomiesolaire.com/
-
arnedanielsen
- Way More Fun to Share It!!
- Posts: 7560
- Joined: Fri Apr 18, 2014 10:42 pm
- Location: Vestby, Norway
- Has thanked: 6353 times
- Been thanked: 7411 times
Re: Mewlon 250 Halpha firt light / 28 May 2023
Another stunning collection of images Christian!
Best regards,
Arne
Best regards,
Arne