Askar103 F4 OSC Star Test. My Results are in!!
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- čas přidán 25. 07. 2024
- In this video, we take a closer look at testing the Askar 103 at F4 in OSC. We examine how well it aligns the red, green, and blue light in the stars, and also explore the amount of vignetting you may encounter when using an APS-C sensor. Join us as we dive into the details of this exciting equipment and its performance in astrophotography.
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Askar 103 Playlist
• ASKAR 103 APO
Here's Links to the gear used in the video! These links helps to support this channel.
Astrophotography Dealers
Highpoint Scientific
bit.ly/3TxxaaT
Agena Astro
bit.ly/3GBGZyx
Askar 103MM APO refractor
bit.ly/47NQLK8
Askar 0.6X reducer for 103MM
bit.ly/3uSaMR8
Askar 0.8X reducer for 103MM
bit.ly/4aaAbpl
Askar 1.0X Flattener for 103MM
bit.ly/3RzW1uV
ASIAIR MINI
bit.ly/49SMfu
SVbony dew heater
amzn.to/48PIQM9
ZWO ASI 071MC PRO
bit.ly/4a61pwS
ZWO 294mm pro
bit.ly/3SX24cH
ASI120MM Mini
bit.ly/3TaGfrp
SVbony 50mm Guidescope
amzn.to/3wGrDHg
Coast Headlamp
amzn.to/42VD4am
Collapsible Cart with Wheels
amzn.to/3wE6Jsv
Here's where I get my music:
www.epidemicsound.com/referra...
artlist.io/
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Great video, thanks for sharing
Yes that’s backfocus from the .6 reducer. The .8 and native were ok on it. There’s an Askar back focus adjuster available or just add a shim a .5mm to start. Nevertheless I’m actually looking at getting this scope. It isn’t bad for a triplet budget refractor. The wide variable fl are optimum for large targets. Anything else can be post processed out.
I have the same scope and i have yet to try it with the 0.6 reducer. Seems promising and with the 533 should be just fine. I agree 💯% that for this price point is a solid performing scope! 😊
It's amazing what you can get these days right?
Well yes and no, Askar/Sharpstar is doing a pretty good job. I own a FMA230 too and it performs very well too.
Nice.
I'm really torn between choosing this Askar 103 APO and the 80 PHQ / ZWO FF80 ... given the wide versatility of the 103 APO...
Was this with a DSLR or the 071?
Yep Asi 071mc pro!
That elongation is your back focus, the sensor is too close. Try adding a 0.5mm or even 1mm spacer
Interesting I had not considered that as I was precisely at askar's specs but I hear what you're saying as it could be down to filter thickness. I'll give it a try next time. I'm out thanks
Absolutely. Askar/Sharpstar are known to be off slightly in their reducer back focus requirements, just watch Lucimatico for his experience. With careful observation and testing this .6 reducer image could be improved significantly. I had to add 3mm to one reducer to get perfect stars.
I’m thinking of purchasing one of these in the near future and your video series is great, particularly as the High Point Scientific video on this scope scared the bejeebers out of me!
Clear skies,
Simon
@@astronotna If you Google 'OPT back focus chart' it will give you an idea to increase or decrease your back focus according to the direction of the stars in your image
@SimonT65 Ive totally seen it before Its like the Astrophotographers staple articles lol. Ill give it go! Just trying to test these things at the recommended specs really good information from both of you!
@@simonthorp8565 Thats awesome thanks for the add here. It's my first experience with Sharpstar this reducer is great already nice to know there is some room for improvement still on this reducer. If its video worthy I will report back here on the channel .Thanks for the add here. Clear skies