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Duncan
June 18th, 2007, 10:10 AM
Hi all,
Though i'd write up my own pleasurable experience for any newbies like myself.
Bintel BT-302 12” Premium Dobsonian

After much thought on what I wanted from a telescope and what I would like to do in the future, I decided on the large Dob. I wanted something that would give me mind blowing views of the Planets and bright DSO’s as well as being able to look at Galaxies and the feinter DSO’s that others talk about. Taking all of this into account I also gave thought of Astro-Photography into the future and on seeing the success of another person with his Dob made up my mind.
Cost
While most of us realize that value for money, Dobsonians deliver far greater Aperture for visual use one still has to factor in all the associated costs. One of the largest cost factors for myself was FREIGHT. As I live in Far North Qld. I new this was going to be steep, so I tried to shop locally. To my dissappointment the local shop could not or would not compete. So I started ringing around down south. My first quote was over $600.00 for freight, 2/3rds the cost of the scope!!!. Finally Bintel in NSW. to the rescue. Here is a breakdown of the cost delivered to me.
1 Bintel BT302 12” Premium Dobsonian telescope------------- $899.00
1 Bintel Barlow 2x ED (2”) ----------------------------------------- $ 99.00
1 Orion collimating eyepiece---------------------------------------- $ 69.00
Freight ----------------------------------------------------------------- $300.00
TOTAL----------------------------------------------------------------$1367.00
Now I’m in business. 12” scope for under $1500.00 you little ripper.
SIZE
Now I new this scope was big but boy I was in for a surprise!.When it arrived I couldn’t believe my eyes. This thing is huge! When I opened the box containing the tube I just stared at it for 5 minutes.
I couldn’t wait to get it assembled. OK forget the tube for a moment and open the box with the base in it. Everything looked ok, No Damage. But hang on! No Instructions, OH CRAP. No matter look at a picture and just put it together. No problem and after about 30 minutes, done. Now gently get the tube out of the box and sit it onto the base and bugger me there’s the instruction booklet for the base in the bottom of the tube box, LOL. You idiot I thought to myself, should have checked everywhere.
The tube was packed very securely and no damage was the result after travelling at least 2000 miles.
Well it’s all assembled and looks like a water heater for the house. Now just sit and stare at it for another 30 minutes.
WEIGHT
At 35 kilos all up it can be a handful to move around. But a quick trip into town to by a barrow for $50.00 and problem solved. Warning!- If you don’t want scratches on the tube, make sure to put a towel or blanket between tube and barrow. 2nd WARNING- Be very careful going through doorways so as not to knock the finder scope or eyepiece holder. Yes I found out the hard way, although luckily no serious damage just had to re-align the finder.
COLLIMATION
This scope did not need much adjustment at all. Enough has been written and discussed about this subject on this site.
THE VIEWS
OK this is what you all want to know about but first the scope came with 3 eyepieces.
Bintel SP32mm (2”)
Bintel Plossl 15mm (1.25”)
Bintel Plossl 9mm (1.25”)
Crayford Focuser is standard on the Premium Dob.
Well outside we go and lets find something to look at. Plenty of moon glow but I wanted to see M42 (Orion Neb) so I lined it up in the finder, took a breath and looked through the 32mm eyepiece. OH MY GOD!!!. It was simply breathtaking. Miles of greenish greyish nebulosity. It was simply stunning. Being greedy I had to try the 15mm eyepiece. The Trapezium was huge. Definitely not what I remembered from a 4” Tasco reflector. Still being greedy I dropped in the 9mm eyepiece, unbelievable!!. I had completely forgotten the 2X Barlow that I bought. OK over to Saturn to see her in all her majesty. I was not disappointed and up went the magnification, as far as I could go (364X).
Yep it was hard to keep in the field of view but damn it was great. The detail was incredible. Cassinis div. easily seen and banding on the planet, and moons so easily resolved. Ok I had to look at Jupiter but she wasn’t up yet, Well not above my treeline. GLOBS, Holy Cow I’ve never seen them look so clear. Some not all, visually resolved way down deep. This was just Awesome. Well Jupiter finally came into view and I was disappointed. No Red Spot. Ah well just spend time watching her dance across the sky with all her kids in tow. 5 that I could see as well as a heap of banding. I was just dumb founded, why did I wait so long to get back into this hobby?!.
Well I’m stuffed so time to go, I’d swung the scope around but thought one last look through the 32mm eyepiece and damn, right in the middle a big long piece of fuzzy stuff. A Galaxy somewhere in Leo.Don’t know which one and to tired to care. What a Day/Night.

To sum it all up. I’m very happy with the scope, it is very easy to use. It arrived in perfect condition. And last but not least, the help from the staff at Bintel was magnificent. (NB. I have no affilliation with Bintel except that i purchased a scope from them.)

Cheers,
Duncan
Ps. Lets not forget all the wonderful advice I got from everyone here.:Chessy_Smile:

Radar
June 18th, 2007, 05:15 PM
Awesome write up Duncan. I felt your excitement, now I'm hanging to get one.

How much does a tracking platform cost for those things?

Cheers

Ray

Duncan
June 18th, 2007, 06:38 PM
Hi Radar,
Mate i honestly can't answer that one. Suffice to say it's out of my league at the moment,LOL. Thanks for the encouraging reply.
Cheers,
Duncan:thumbsupmate:

Mick
June 18th, 2007, 07:15 PM
Yes nice write up, sounds like your having a ball mate.

Radar
June 19th, 2007, 12:12 AM
Hi Radar,
Mate i honestly can't answer that one. Suffice to say it's out of my league at the moment,LOL. Thanks for the encouraging reply.
Cheers,
Duncan:thumbsupmate:

Reason I ask is because it's quite a decent focal length and you were getting some good power out of it, I was thinking that it would have been a constant battle to keep objects centered. But either way, sounds like you're loving it.


Yes nice write up, sounds like your having a ball mate.

Makes me wanna go out and buy.

:pipethinker:

Duncan
June 19th, 2007, 06:40 AM
Hi Mick,
Yep i'm loving it. I sit the scope on the pathway leading to the clothesline which has a bit of an angle to it. This helps cut out a lot of movement so even at 364X i get 3 passes of Jupiter through the eyepiece only having to move scope up and down, then adjust sideways to edge of field and go again.When i get more financial i'll look into other things.
Cheers,
Duncan:thumbsupmate:

Tenacious Del
June 22nd, 2007, 12:12 AM
I am surprised that these things do not need heaps of collimation when put together. I would have thought that everytime they were assembled that collimation would need to be done. What is the mirror alignment like in those? Do you need to collimate it much?Thanks

Del

phoenix
June 22nd, 2007, 03:59 PM
Nice little write up Duncan, Sounds like you are having alot of fun with that scope.:cool:





Cheers Jason :pipethinker:

Duncan
June 24th, 2007, 07:34 PM
Collimation was pretty good on mine when i got it. All adjustment was pretty easy.

rmcpb
July 24th, 2007, 11:54 AM
One tip for collimation on these is to get the heavy duty collimation springs from Bintel, then they hold collimation from horizon to zenith without the use of the locking screws.

AstroTasmania
July 24th, 2007, 12:11 PM
Hi Duncan,

Great write-up on your new scope, must be Xmas come real early for you - & am pleased to hear that it is all as you had hoped for - & more.

Thanks for letting others in on your excitement - it does sometimes stimulate a bit of action in others who might be thinking of taking the plunge.

The heavy springs suggested by Rob is a good suggestion too.

Enjoy and lotsa Clear skies...

Shevill

orion
July 24th, 2007, 05:50 PM
Great stuff Duncan!:welldone:




How much does a tracking platform cost for those things?

Cheers

Ray

It depends how much your willing to spend...... Why not make one?

http://members.tripod.com/denverastro/dsdfile/dspfile.htm

http://home.wanadoo.nl/jhm.vangastel/Astronomy/Poncet/e_index.htm

http://www.tomhole.com/EQ%20Platform.htm

http://www.geocities.com/reaganjj/

http://homepage.ntlworld.com/molyned/the_equatorial_platform.htm

http://www.otterstedt.de/wiki/index.php/Poncet_Montierung

Duncan
July 25th, 2007, 12:54 PM
Many thanks to you Ed for those links. Hopefully they will help many others as well as myself.
Cheers,
Duncan:thumbsupmate:

rmcpb
July 26th, 2007, 09:24 AM
Once the platform is built simple control can be from a stepper motor from an old printer and a controller. It took me a long time to come to terms with these beasts when I made my original platform but the controller kits from Oatley Electronics (http://secure.oatleyelectronics.com//index.php) are really handy. I used the one that does not need to be hooked to a computer for control and it worked really well. When I got my Roundtable Platform they use the same type of controller as well.

Radar
July 26th, 2007, 12:43 PM
Once the platform is built simple control can be from a stepper motor from an old printer and a controller.

Interesting Rob. Printer motors? That's handy. I have a new found love for my bubblejet now. Cheers for the info.

Ray

Duncan
July 27th, 2007, 07:09 PM
Wellcome all,
I've come home a little bit annebriated from then bowls club and thge miissus ain't happy so i will getr intomthis a bit later. As in tomorrow,LOL/
But i will take all on board.
cheers ,
Duncan

in other words i'm pissed and she ain'ty happy

Radar
July 27th, 2007, 07:24 PM
Wellcome all,
I've come home a little bit annebriated from then bowls club and thge miissus ain't happy so i will getr intomthis a bit later. As in tomorrow,LOL/
But i will take all on board.
cheers ,
Duncan

in other words i'm pissed and she ain'ty happy

lol, how funny. Enjoy life while you can mate :thumbsupmate:

Check this clip out Duncan!!!!

http://www.youtube.com/watch?v=pAolqNR_v7s

wakaleo
August 11th, 2007, 01:27 PM
That's a good write-up Duncan. Your enthusiasm is infectious.

Hope you have a comfortable dog house. ;-)

Jim

Duncan
August 12th, 2007, 05:58 PM
Jeez Ray if only you knew how irritating that song has become,LOL:thumbsupmate:

Duncan
August 12th, 2007, 06:00 PM
DOGHOUSE, did someone say DOGHOUSE, Sheesh i'm always in that one,LOL:Chessy_Smile:

Tenacious Del
August 15th, 2007, 12:43 PM
DOGHOUSE, did someone say DOGHOUSE, Sheesh i'm always in that one,LOL:Chessy_Smile:

Reminds me of me :thumbsupmate:

AstroTasmania
November 19th, 2007, 12:38 PM
Hi dropship dvd,

I cannot see the relevance to a newly purchased 12" Newtonian on a Dobson mount, in your advertising post.

Shevill