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BAMBI vs. GODZILLA - new Skywatcher 300PDS

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#1 eyepiecedropper

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Posted 20 November 2012 - 02:44 PM

Hi, this is Bambi vs. Godzilla ;-) Pics just can´t show you how big this 12" is. It looks pretty much like an oil drum. The mirror + holder alone is heavier than Bambi, an 8" f/6 scope. I´m not sure anymore that I want to mount this heavy thing on my eq-6. It seems this time I´ve gone too far. But I like it (her? him?) already. This thing on my little balcony is a challenge for sure.
BTW: the PDS has a welded tube, not a seamed one.

regards, Martin

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#2 csrlice12

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Posted 20 November 2012 - 03:15 PM

Truthfully, it wasn't even a contest......... :lol:

#3 Deep13

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Posted 20 November 2012 - 03:35 PM

I see you have rings on the 12". Which mount do you use?

#4 DavidC

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Posted 20 November 2012 - 06:03 PM

Nice telescope, that looks impressive! You mentioned that you weren't sure if you wanted to put your scope back onto an eq-6. What about making altitude bearings and a Dob mount? That could be an easier option. What is the f/ number on it?
David

#5 Deep13

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Posted 20 November 2012 - 08:57 PM

My 8" f/6 sonotube scope (9.5" overall diameter) is about the limit for my EQ6. A 12" will be too much for it.

#6 eyepiecedropper

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Posted 21 November 2012 - 04:38 AM

hi all + thanks for your replies.

the 300 pds has a focal ratio of f/5. i will give it a try and mount it on my eq-6. therefore i´ve ordered a losmandy saddle. the pds was delivered with a nice losmandy plate.

btw the sonotube 8"f/6. rides quite nicely on my eq-5. total weight is 10 kgs with tube rings. it has a very nice and smooth kineoptics hc-1 focuser.

regards, martin

#7 eyepiecedropper

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Posted 23 November 2012 - 05:51 AM

setup on eq-6 without mirror assembly. the silver thingy under the ota is the first of the tube liners i will put -inside- the tube. the liner is made from 4mm styrofoam to get rid of the thermal mass of the steel tube. i´ll glue in old wiper blades inside on the other side of the drawtube as secondary baffles. vignetting is no problem since i will use this scope only for visual planetary observation.
even without the mirror this thing is very heavy to put it on the mount with one person.

regards, martin

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#8 eyepiecedropper

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Posted 23 November 2012 - 05:54 AM

the skywatcher 3" dovetail plate that came with the ota.

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#9 Deep13

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Posted 23 November 2012 - 06:52 PM

Huh. Where did you get that short peer and feet for the EQ6?

#10 eyepiecedropper

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Posted 24 November 2012 - 01:30 PM

it works!

for visual it works better than i thought. focussing is not so bad with the fine focusser. dampening time is about 2 seconds.
this is a shortened skywatcher pier/tripod. shortening the pier as low as possible makes life a lot easier.

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#11 eyepiecedropper

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Posted 24 November 2012 - 01:33 PM

i used folded flocking paper for the secondary baffles. easy and stable.

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#12 dvb

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Posted 26 November 2012 - 03:15 PM

Impressive!

I had the 10" (254 mm) Skywatcher. Tricked out with rotating rings it was 45 lb. (20 kg). A Skywatcher EQ6 Pro handled it impressively.

I'm sure the 12" (300 mm) Skywatcher OTA weighs significantly more than the 254mm- but I wouldn't count the EQ6 out, especially if you can keep the weight of accessories down.

#13 eyepiecedropper

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Posted 27 November 2012 - 12:42 PM

hi, if someone is still interested...
here is the cooler made from a kitchen bowl with 120mm ultra kaze cooler. 133cfm at 3000rpm. new barbell weights.

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#14 eyepiecedropper

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Posted 27 November 2012 - 12:43 PM

the cooler attached only with a snug fit, holds well...

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