[SOLD] [REDUCED] Optically excellent C11 XLT with extras

[bratislav (Bratislav)]

For sale:
Optically excellent example of Celestron C11 SCT.

It was measured by Roddier test having a Strehl of 0.94+, which is easily confirmed by a star test in good conditions as well as numerous excellent planetary images of which some are attached.

Note that images are invariably lessened by jpeg compression necessary to be included here.
Always kept inside, covered. Optics are pristine and very clean. Any inspection is welcome.

Included is a sizeable number of accessories that are actually not only useful but rather essential:

- Lymax R2 CATcooler with lifetime supply of filters (absolutely necessary for any SCT to work at optimum)
- JMI EventHorizon 2" electric focuser for nailing that focus perfectly every time without waiting for vibrations to die out
- Kendrick flexible dewshield
- 11" dewstrap heater
- Losmandy 3" dovetail
- Bob'sKnobs for fast and easy collimation
- Celestron 0.63X reducer-corrector (I actually prefer view with Pan 24 and this, rather than with 35 Panoptic straight, as it shows less field curvature)
- 1-1/4" as well as 2" adapters

Unit is in Melbourne, I do have original boxes and can ship at cost but prefer local pickup.


I know there were some cheap C11's around but this one is optically exceptional and if you were to separately buy all of the accessories that are included, you'd easily spend way over $800.

Reason for sale - 16" optics with similar quality makes a better planetary instrument - simple laws of physics.

PM's only please.

[bratislav (Bratislav)]

Few more pics.
Forgot to mention, this is StarBright coated C11.

Images aside, this is also a great visual telescope, as it can be used very effectively with binoviewers.

It in fact remains the smallest aperture that could visually show me the elusive Encke/Keeler gap in outer ansae of Saturn's rings.
It displayed Sirius' companion years before it became "easy". It is my favourite Lunar telescope as it offers both comfort of seating as well as using both eyes which makes my floaters dissapear.
This C11 will remain sharp (seeing permitting, as long as it is cooled properly) at magnifications well over 800 times.
And yes, it allows you to image detail on Jupiter's moons (see Ganymede image)

Again, all inspections are very welcome.

[bratislav (Bratislav)]

This is a raw stack of 3000 frames on Saturn, collected with C11. Just a stack, no sharpening, no deconvolution, no processing of any kind. It shows Encke cleanly, just as it did in the eyepiece.

The eyepiece view was of course sharper. Encke was impossibly thin, sharp line in the eyepiece (at 600X!!!), coming into view whenever seeing settled to 10/10.
(seeing was indeed excellent that morning)

[bratislav (Bratislav)]

C'mon guys, here's telescope that will show you that Moon's Straight Wall isn't so straight, will reveal intricate craterlets inside Plato, show the Alpine Valley cleanly, expose vast amount of detail inside Tycho as well as almost too much inside Clavius!
Pics really don't do it justice as I have to clobber them into allowable 200kb, but eyepiece view will show the Moon as incredibly smooth dusty world, with "creaminess" that needs to be seen to be believed. This scope is planetary tour de force, and I'd easily put it against any of the big names visually and especially for imaging. At the same time it will happily seat on EQ-6 and collect many more photons than any of the smaller (but vastly more expensive) scopes with pedigree.

[bratislav (Bratislav)]

There were some questions about cosmetics of the tube and other parts, so some extra closeups attached.