#1281  
Old 13-03-2015, 02:46 PM
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sn1987a (Barry)
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No shroud. The mirror does get dirty easily ( also easy to give a quick distilled water rinse ) and dew will be an issue. Not sure the best way to solve those issues yet, still thinking.

Luckily I have other scopes that are more tolerant of dew conditions.

I got this one together with the idea of it being the ultimate grab and go, a big ultralight dob easy to throw in the back of the 4wd when traveling.

I got great views in my light polluted backyard last night. Jupiter, Saturn, Moon, Homunculus, Ghost of Jupiter ( I could easily see the central star ), split Sirius and Antares with ease, M46 planetary, Sombrero, Cen A, Omega Cen.

Last edited by sn1987a; 13-03-2015 at 10:06 PM.
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  #1282  
Old 13-03-2015, 09:20 PM
clive milne
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An easy way to solve the primary dew issue is to arrange a row of muffin fans on one side of telescope such that they blow horizontally across the mirror. It will have the added benefit of disrupting the boundary layer of turbulent air convecting off the primary. I would put them on the opposite side of the ota from the eyepiece.

fwiw) I've just been looking at the construction pics... the workmanship is impressive.
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  #1283  
Old 19-03-2015, 02:36 PM
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traveller (Bo)
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My latest setup
Mead LXD55 10" f4 Schidmt newtonian mounted on EQ6. The OTA has been flocked, with upgraded Moonlite focuser and 8x50 RACI finder.
At last, a fast scope
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  #1284  
Old 29-03-2015, 06:08 PM
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FlashDrive (Col)
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Acquired this ' beauty ' the other day.
TeleVue ( 101mm ) 4" Aperture, Petzval Design. ' Fluorite ' Rear Lens
First light tonight I hope...been cloudy lately.

An extract from the Web.....

6) TeleVue Genesis SDF (101 mm f/5.4 refractor.

These popular refractors throw up an impressively bright, wide-field view. The design is a hybrid, and involves more optical sleight-of-hand from Al Nagler. The doublet objective lens operates at f/12. Near the eyepiece lies a second doublet, which brings the optical train down to f/5.4. The second doublet uses a fluorite element, which is said to reduce chromatic aberration to nearly imperceptible levels. The scope is very well-built, almost overbuilt.


Flash.....
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  #1285  
Old 29-03-2015, 07:56 PM
Kunama
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That is a little classic in beautiful condition, well worth hanging onto Col ........... but just in case .....DIBS !!!
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  #1286  
Old 29-03-2015, 08:24 PM
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LewisM
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No, you sre not an imager, so dibs!!!! ��
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  #1287  
Old 02-04-2015, 04:22 PM
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Louwai (Bryan)
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I think it's been a couple of years since I posted a pic or 2 in this thread...
Nothing much has changed, except for maybe the tow vehicle.....
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  #1288  
Old 02-04-2015, 06:26 PM
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Nice looking Dob Bryan, is that a 20"? Pity about the gloomy sky in the background.
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  #1289  
Old 03-04-2015, 04:40 PM
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Louwai (Bryan)
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Quote:
Originally Posted by Allan View Post
Nice looking Dob Bryan, is that a 20"? Pity about the gloomy sky in the background.
Yes Allan. SDM #31 - 20".....

The 20" is 5yrs old this yr. It visited Peter over Christmas 2013 for a little touch-up. It is an awesome scope. I will never be selling it.

The C8 I've had forever. Treated it to a new mount 18mths ago..
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  #1290  
Old 10-04-2015, 06:48 PM
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Slawomir (Suavi)
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My latest setup.

She is not the fastest nor the sharpest scope out there, nevertheless tracks and guides nicely.
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  #1291  
Old 10-04-2015, 08:06 PM
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Whilst on a business trip to Sydney I managed to pick up the newest member of my scope collection ...... Thanks JohnOz

The Edmund Scientific Astroscan 108mm @ FL 445mm Newtonian reflector complete with Finder Guide, Base, Strap, Correct image tube and RKE28mm eyepiece (or the Rank Kaspereit Erfle 28mm to be perfectly OCD about it )

Once at home the scope was treated to a complete stripdown then an hour of polishing and waxing (no not the Brazil kind !) the RKE was also disassembled and every component cleaned and checked before reassembly and testing.

This will be a scope for my daughter and granddaughter to share
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  #1292  
Old 10-04-2015, 10:18 PM
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FlashDrive (Col)
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Nice Matt .... Nebula Red ...

Col ...
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  #1293  
Old 11-04-2015, 07:25 AM
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Quote:
Originally Posted by FlashDrive View Post
Nice Matt .... Nebula Red ...

Col ...
Thanks Col, my post had 83 views overnight but yours was the only response so is very much appreciated .

If the little Astroscan had feelings they could have been hurt.
Taks don't have to put up with such indifference
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  #1294  
Old 11-04-2015, 09:19 AM
rrussell1962
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Good pick up Matt. I may give mine a polish so that it looks as good. I had mine out the other night just for fun, very nice views with the 15mm Panoptic.
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  #1295  
Old 11-04-2015, 09:29 AM
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A bit of car polish followed up with synthetic car wax and clean micro fibre cloth is all that's needed Richard. I just tried the RKE last night but will try it out with the new LVWs tonight!

Just need to make a bracket to hold it at the right angle on my Manfrotto/Markins tripod to get the right height.

My granddaughter is drawn to red objects and headed straight for the Astroscan when she saw it, though it will be a while before she understands what it is or does.
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  #1296  
Old 14-04-2015, 06:55 PM
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RickS (Rick)
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Astro-Physics AP140EDF (thanks, Greg!) and the re-purposed guide scope
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  #1297  
Old 14-04-2015, 06:57 PM
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Joshua Bunn (Joshua)
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Drool!!
Do you have 2 rotators on that Tak, Rick?
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  #1298  
Old 14-04-2015, 07:17 PM
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RickS (Rick)
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Quote:
Originally Posted by Joshua Bunn View Post
Drool!!
Do you have 2 rotators on that Tak, Rick?
It has the Captain's Wheel thing which is not really that practical as a rotator and the CAA which works quite well, Josh. I just keep the Wheel screwed up tight and ignore it.
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  #1299  
Old 14-04-2015, 07:20 PM
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LewisM
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My latest anti-aperture fever tonic - as new 2001 Takahashi FS-78.

3 prior owners, 2 of whom are IIS known and loved

It came with the vari-extender, reducer, Tak prism diagonal, Tak finder, custom aluminium case and clamshell (not shown in pictures) - all for 1/6th the coast of Rick's new toy (and almost 1/6th the aperture )

Next Tak.... FSQ-130...HAHAHAHA

Also the FC-100 with newly restored Tak 7x50 finder in full imaging setup outside catching some sun from the upper balcony.
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Last edited by LewisM; 14-04-2015 at 07:42 PM.
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  #1300  
Old 14-04-2015, 07:22 PM
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Joshua Bunn (Joshua)
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Quote:
Originally Posted by RickS View Post
It has the Captain's Wheel thing which is not really that practical as a rotator and the CAA which works quite well, Josh. I just keep the Wheel screwed up tight and ignore it.
The CAA is a great piece of gear!
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