Hi: I had one for 3 months now and I do use for deep sky with a Celestron f6. 3 reducer. The mount is a CGEM 2, the scope works fine with my APSC and full frame Orion CMOS cameras. So I am shooting at about f6 with the reducer. Not bad!
Having always been interested in astronomy I am Just thinking of getting into this awesome looking hobby so doing lots of research and watching videos, your easy going and clear instructions are just what’s needed, well done. Subbed and looking forward to more. Big hi from Scotland. 👍
Hi, thanks for the video. I have one of these scopes. Could you do a collimation video at some stage? I'm not confident enough to attempt it and there's hardly any stuff on UA-cam about it with these scopes. Cheers from Steve NZ
good day sir i have a question about the collimation i have the same scope but from the brand TS i am able to collimate the secondary mirror with a lazer collimator but i am not able to collimate my primary mirror greetings from mitch
Fantastic unboxing and review (splendid soundtrack too👏) Looks like a lovely scope and I’ll look forward to seeing some more images. Can I ask what camera you were using in the video?
What makes a telescope fast/slow? I see shorter focal length that give wide field of views can be ‘fast’ and this one with a long FL is ‘slow’ but don’t understand why. Any explanation would be appreciated, thank you. 👍
As you may know its the ratio of the focal length and the aperture of the scope. The bigger the aperture, more light can enter, the shorter the focal length the less distance the light has to travel in the scope and the wider the field of view. Therefore an F4 has a wide aperture and field of view in relation to the focal length and can gather light quicker than a F10, which will be more zoomed in but will gather light 'slower' in relationship to the focal length. For astrophotography an F5 is considered 'fast-ish' and a good happy medium for photography. It also follows that the exposure time is therefore shorter with and fast lens/scope, and you can achieve a equivalent amount of light gathering in a shorter exposure time than with a slower focal ratio lens/scope. Hope this helps a bit.
Hello! - 1st The C9.25 is a Schmidt-Cassegrain design of 235mm diameter with f/10, the one presented here is a pure Cassegrain, 200mm f/12. It's not the same instrument -2nd, what target are we talking bout? A few nebulae and galaxies are very bright and very visible to the naked eye. Quite a lot of deep sky objects are not. Some can't been seen, visually, in a telescope under most skies (reflection nebulae, for exemple). -3rd, do you know the parameters Astrobiscuit used on his C9.25? Has he used a focal reducer (can drop f/6)? A Hyperstar lens (replacing the secondary mirror and allowing imaging at f/2 !!!)? How long were his exposures? How many did he take? How many nights of waiting for weather and patient fiddling did he go through to achieve the result he showed? -4th, and probably the biggest point: what mount is in use? Do long exposur on a mount with tracking < 0.5 arc second is fine. An eq 5 with simple motors will track, but not very long, especially not at the magnification level a big Cassegrain will bring. And not everyone can (or wants to) put the cost of a car in a mount. So yes, a "planetary" scope CAN be used for deep space. With time, dedication (and a sizeable bag of money), you can image everything with anything, but most of us are hobbyists, and we must enjoy the hobby within certain constrains ;)
Hi: I had one for 3 months now and I do use for deep sky with a Celestron f6. 3 reducer. The mount is a CGEM 2, the scope works fine with my APSC and full frame Orion CMOS cameras. So I am shooting at about f6 with the reducer. Not bad!
Having always been interested in astronomy I am Just thinking of getting into this awesome looking hobby so doing lots of research and watching videos, your easy going and clear instructions are just what’s needed, well done. Subbed and looking forward to more. Big hi from Scotland. 👍
Thanks, it's such a steep learning curve I just wanted to try and help others. Hope they are of use.
Hi, thanks for the video. I have one of these scopes. Could you do a collimation video at some stage? I'm not confident enough to attempt it and there's hardly any stuff on UA-cam about it with these scopes.
Cheers from Steve
NZ
Great idea! I'll try and put something together. Thank you for watching!
good day sir i have a question about the collimation i have the same scope but from the brand TS i am able to collimate the secondary mirror with a lazer collimator but i am not able to collimate my primary mirror greetings from mitch
I'm still learning how to collimate my own. I have to get a better collimation device, however as mine is only really suitable for Newtonian scopes.
@@AndyofAstro The only device needed is a Cheshire
Fantastic unboxing and review (splendid soundtrack too👏) Looks like a lovely scope and I’ll look forward to seeing some more images. Can I ask what camera you were using in the video?
Thanks, the camera was an ZWO ASI224MC.
What makes a telescope fast/slow? I see shorter focal length that give wide field of views can be ‘fast’ and this one with a long FL is ‘slow’ but don’t understand why. Any explanation would be appreciated, thank you. 👍
As you may know its the ratio of the focal length and the aperture of the scope. The bigger the aperture, more light can enter, the shorter the focal length the less distance the light has to travel in the scope and the wider the field of view. Therefore an F4 has a wide aperture and field of view in relation to the focal length and can gather light quicker than a F10, which will be more zoomed in but will gather light 'slower' in relationship to the focal length. For astrophotography an F5 is considered 'fast-ish' and a good happy medium for photography. It also follows that the exposure time is therefore shorter with and fast lens/scope, and you can achieve a equivalent amount of light gathering in a shorter exposure time than with a slower focal ratio lens/scope. Hope this helps a bit.
@@AndyofAstro thanks. 👍
I disagree about the galaxy work. Astrobiscuit took an image of M51 with his C9.25 which was great and showed a lot of details.
Hello!
- 1st The C9.25 is a Schmidt-Cassegrain design of 235mm diameter with f/10, the one presented here is a pure Cassegrain, 200mm f/12. It's not the same instrument
-2nd, what target are we talking bout? A few nebulae and galaxies are very bright and very visible to the naked eye. Quite a lot of deep sky objects are not. Some can't been seen, visually, in a telescope under most skies (reflection nebulae, for exemple).
-3rd, do you know the parameters Astrobiscuit used on his C9.25? Has he used a focal reducer (can drop f/6)? A Hyperstar lens (replacing the secondary mirror and allowing imaging at f/2 !!!)? How long were his exposures? How many did he take? How many nights of waiting for weather and patient fiddling did he go through to achieve the result he showed?
-4th, and probably the biggest point: what mount is in use? Do long exposur on a mount with tracking < 0.5 arc second is fine. An eq 5 with simple motors will track, but not very long, especially not at the magnification level a big Cassegrain will bring. And not everyone can (or wants to) put the cost of a car in a mount.
So yes, a "planetary" scope CAN be used for deep space. With time, dedication (and a sizeable bag of money), you can image everything with anything, but most of us are hobbyists, and we must enjoy the hobby within certain constrains ;)