Bushmaster Mars-1400?

[Arman]

Does anyone own one of these?

I'm thinking of buying one from Teds for $230 Au,

Here are the specs.

Bushmaster Mars-1400!
467 Power high resolution, shot tube, havy duty aluminum tripod, deluxe equatorial lmount.
MIRROR DIAMETER: 150mm
FOCAL LENGTH: 1400mm
MAIN TUBE POWER: 233X
MAX POWER: 467X
ACCESSORIES INCLUDED:
A) 6mm eyepiece,
B) 20mm eyepiece,
C) Lunar filter
D) 2x barlow lens, (optional)
E) 1.5x erecting lens. (optional)
Or

You reckon i shall stay with



http://www.celestron.com/c2/images/transparent.gifPTICAL DESIGN http://www.celestron.com/c2/images/b_q.gif Newtonian Reflector APERTURE http://www.celestron.com/c2/images/b_q.gif 127 mm (5 in) FOCAL LENGTH http://www.celestron.com/c2/images/b_q.gif 1000 mm (39.37 in) FOCAL RATIO 7.87 EYEPIECE 1 http://www.celestron.com/c2/images/b_q.gif 20 mm (0.79 in) MAGNIFICATION 1 http://www.celestron.com/c2/images/b_q.gif 50 x EYEPIECE 2 4 mm (0.16 in) MAGNIFICATION 2 250 x BARLOW LENS 3 x FINDERSCOPE 5x24 MOUNT German Equatorial TRIPOD Aluminum ACCESSORY TRAY No-Tool Tray with Eyepiece holder CD ROM "The Sky®" Level 1 WEIGHT 17 lb (7.71 kg) LIMITING STELLAR MAGNITUDE http://www.celestron.com/c2/images/b_q.gif 13 RESOLUTION http://www.celestron.com/c2/images/b_q.gif 1.1 arcsec RESOLVING POWER http://www.celestron.com/c2/images/b_q.gif 0.91 arcsec PHOTOGRAPHIC RESOLUTION 254 line/mm LIGHT GATHERING POWER http://www.celestron.com/c2/images/b_q.gif 329 x ANGULAR FIELD OF VIEW http://www.celestron.com/c2/images/b_q.gif 0.8 ° LINEAR FIELD OF VIEW (@1000 YDS) http://www.celestron.com/c2/images/b_q.gif 43 ft (13.11 m) LINEAR FIELD OF VIEW (@1000 m) http://www.celestron.com/c2/images/b_q.gif 14 m OPTICAL COATINGS Aluminum SECONDARY MIRROR OBSTRUCTION 1.6 in (40.64 mm) SECONDARY MIRROR OBSTRUCTION BY AREA 10.2 % SECONDARY MIRROR OBSTRUCTION BY DIAMETER 32 % OPTICAL TUBE LENGTH 20 in (508 mm)


Any choices made up?

I'll probably stay on the Celestron powerseeker if i can manage to fix the Finder scope ;)

Does anyone know how to fix the Finderscope?

Kind Regards

Arman :help2:

[dannat]

I would give the bushmaster a miss - get a dob if you ant to upgrade.

whats wrong with the finder?

[erick]

I agree with Daniel. I suggest you pay a visit to York Optical (city) or Bintel (The binocular and telescope shop, Camberwell), see what they have and have a chat to them. For a few more dollars you can do a lot better. Then come back here and ask more questions.

Yes, what is wrong with that finderscope?

[OneOfOne]

I would only make one suggestion...

Don't do it.

[Arman]

It seems my finderscope is ruined, ask me how, i have no idea.
With the mirror been cracked that i didn't realize.
But.

I returned it for full store credit.

So what dob you reckon i shall start off with then?

Planing to spend up to $400 on first scope.

List what i shall get.

=)

[erick]

Arman, can you extend to $429? Then have a look at an 8" reflector on a dobsonian mount from Bintel:-

https://www.bintelshop.com.au/welcome.htm

[Arman]

Bintel BT-202 08" Premium Dobsonian :scared:

Just bought one. Plan to have it in 2-4days shipping.

Well i wont be able to go to get it due to work.

All for $429, lets hope its good ;).

I've taken your word for it.

Gotta run.

Take Care:P

[erick]

Congrats! When you get it, get in touch if you'll like any help setting up and getting started. Bintel's written instructions are quite comprehensive, but picking brains of someone who has been there before can help!

Have you got a place with darker skies you can take it to? Or just a bright Melbourne suburban backyard?

[Arman]

I live up in Beconsfield, its about 800metres above sea level there.

It's always clear where i live.

Can see the Milky way without any magnification.

Blow your mind :thumbsup:

Thanks for the tip..

I'll try my best when it comes.

Any problems i'll let you know.

[erick]

Lucky you! Should have nice south, east and maybe north skies. Look forward to hearing how it all goes.

Cheers :)



SAB will want to move in next door ;)

[§AB]

lol I think Arman was actually referring to the sky darkness when he said clear. He can't possibly be describing the weather with the words "always" and "clear" in the same sentence :P

[Lui819]

Hi, anyone has the manual for the bushmaster Mars 1400?thanks

[brian nordstrom]

:) Try this ,

http://geogdata.csun.ed/-voltaire/classics/

This is very cool reading .
Brian.

[Barnacle]

Hi Chris,

http://www.hobbex.se/internt/artiklar/783937/783937_Spegelteleskop_Saturnus.PDF

Try the manual here, it is also a short tube Catadioptric Newtonian reflector telescope, it is 114mm instead of 150mm, but the same type of telescope.

Short tube models v long tube models
114mm - f500mm v 114mm - f900mm
150mm - f1400mm v 150mm - f750mm, 1000mm or 1200mm

or you can type in google "Short tube telescope manual" and you will find a few of these type of manual, including the Celestron short tubes 114mm and 130mm Powerseeker models.

They have a negative lens (focal corrector lens, not barlow lens as many incorrectly coined, as barlow does not correct spherical aberration) in the bottom of the focusing drawtube to correct the spherical aberrations introduced by the very fast spherical mirror, but the result is not too good with image clarity, especially away from the centre field of view.

It is also not strictly a Jones Bird telescope design, as the focal corrector of Jones Bird design is in the main telescope tube, not at the bottom of the focuser drawtube. At best, these focal corrector scopes are fuzz scopes on high magnifications even when collimated (harder to collimate with the corrector lens present).

See comparisons of short-tube spherical versus parabolic mirror telescope of the same 150 mm size:

http://www.astronomyforum.net/archive/index.php/t-6153.html

Hope that helps.

Kind regards,

Bill