notFritzArgelander wrote: ↑Sun Oct 27, 2019 12:50 am
dcrowson wrote: ↑Sat Oct 26, 2019 10:12 pm
Planetary imaging is ruled by long focal lengths - SCTs... With the exception of the moon, the planets are fairly small and benefit from the long focal length (3000mm+ for a 12", think 6000mm+ with a 2x barlow). I think someone did mention that these are more compact than the newt and you might be able to get away with one on a EQ6. It would be overloaded but you're also taking sub second exposures so tracking isn't much of an issue.
Dan
A celestron 9.25 or 11 would be carried comfortably for planetary on an EQ6.
Ok, let me put it this way then.
I visited 2 places or centers of Astronomy in my country, and they do visual even for public, one placing C9.25, and the other placing Meade 10"
SCT, i looked through both of them, both are amazing, BUT, none impressed me enough, i mean they are almost the same view or even less than my Mak, my Mak is sharper and their
SCT are brighter, that's all, so i couldn't feel the difference, so in imaging even with larger
aperture advantage i don't think both of C9.25 or C11 will impress me, i already saw hundreds or thousands of results from C11 on the net, none of them changed my mind from C14 or 16"
Dob results, in fact even 12" Newtonian is better result than C11 from what i saw, means i have to forget about 9" or 10" or 11" and start from 12", and because i will have 20"
Dob later so i feel i will not go with 16" or 14", but 14" is still in list but less priority, 12" is shining more in my list and head, but i have to wait and see, i may buy anotehr mount, or i may risk with 12" on EQ6, or maybe i can increase the 20" scope so i can buy an
EQ platform and use that, but nothing is yet confirmed, but the only confirmation i have is that 9.25"/11" are not in list and also 12"/14"
SCT are not in list, if i must buy a new mount for 12"
SCT or 14"
SCT then it is very affordable for me to get 12" Newt and another mount then, i can save more by this.
Your point about is C9.25 and C11 is very correct, i should start with that actually last year so maybe i won't think about larger scopes yet, but my mistake [maybe not] is that i went with 7" Mak and 8" Newt, and results telling me that 10" and closer aren't gonna cut for me on planetary, 12" is also not much, but it is the largest cheaper options i can get right now later.
Telescope: SkyWatcher: Skymax 180mm F15 Mak, StarTravel 80mm f/5 ---- Meade LX70 8" F5 Newt
Mount: SkyWatcher AZ-EQ6 GoTo
Cameras: QHY163M, QHY5L-II-M, ZWO [ASI174MM, ASI290MM, ASI385MC, ASI120MC(damaged)], Sony A7r + Canon DSLRs + lenses [Hasselbald, Canon, Sony, Sigma, Samyang], Hasselbald H4D-60
Filters: Astrodon Ha 5nm, Cyclops Optics LUX-Series RGB, Optolong NB, Baader filters [M&S Neodymium, Contrast Booster], Skywatcher UHC & OIII
Software: SGPro, PixInsight, APP, APT, DeepSkyStacker, Nebulosity, SharpCap, FireCapture, PHD2, CDC, Photoshop CC