Dobson or newtonian on a dobson mount?

[Peter Drew]

I have 6", 8" and 12" reflecting binoscopes on "Dobsonian" type mounts. The design suits most telescopes that need a simple, effective and cheap to make mount.  

[swamp thing]

36 minutes ago, ollypenrice said:

 

At one time TV did a really nice mini Dobsonian mount in wood for their small refractors. I can find no trace of it these days though, and sometimes think of making one.

Olly

Me too Olly

I have often thought of making a 'Dobfractor'  

[Moonshane]

That's what the giro mounts are in truth?

[Peter Drew]

Not all alt-az's are Dobsonians but most Dobsonians are alt-az's.   

[faulksy]

1 hour ago, swamp thing said:

Me too Olly

I have often thought of making a 'Dobfractor'  

but that would be a waste of a perfectly good mount steve

[ollypenrice]

3 hours ago, Peter Drew said:

Not all alt-az's are Dobsonians but most Dobsonians are alt-az's.   

But not all... Someobody in my old UK astrosoc had a large Beacon Hill 'Dob' set at a built-in equatorial tilt. It's the only such device I've ever seen. I don't remember ever seeing it in action but I did see it around.

Olly

[N3ptune]

8 hours ago, Timebandit said:

 

Maybe we should just call it a reflector telescope on a Dobson mount?

 

I like that one, but the other day I pointed a reflector telescope at the shop and the seller said to me 2 times, he repeated like a parrot: it was a Newtonian telescope because I was calling it a reflector. What can I do? he wants the telescope to be a Newtonian. 

I don't know what's the matter exactly with him. (I will never know for sure)

 

[John]

45 minutes ago, N3ptune said:

I like that one, but the other day I pointed a reflector telescope at the shop and the seller said to me 2 times, he repeated like a parrot: it was a Newtonian telescope because I was calling it a reflector. What can I do? he wants the telescope to be a Newtonian. 

I don't know what's the matter exactly with him. (I will never know for sure)

 

Perhaps he was trying to differentiate between the newtonian design and other reflecting designs ?.

Who knows

It's a clear night here tonight so I'm not really bothered what folks want to call the 12" aperture telescope that I'm getting wonderful views though

[N3ptune]

1 hour ago, John said:

Perhaps he was trying to differentiate between the newtonian design and other reflecting designs ?.

Who knows

It's a clear night here tonight so I'm not really bothered what folks want to call the 12" aperture telescope that I'm getting wonderful views though

You are lucky to have a clear night tonight, here, we have heavy glaze frost. I consider myself extremely fortunate to have electricity right now, it can go out any time.

--> I wish you have a great observation with your 12" aperture instrument.

This is it:

[John]

26 minutes ago, N3ptune said:

You are lucky to have a clear night tonight, here, we have heavy glaze frost. I consider myself extremely fortunate to have electricity right now, it can go out any time.

--> I wish you have a great observation with your 12" aperture instrument.

This is it:

Thanks and I hope your electricity stays on !

That frost does not look nice at all

[BritAngler]

Pouring more petrol on the flames....

Most mounts labelled as Dobsonians aren't. They should be called Fork mounts instead. A proper Dobsonian should have some sort of cradle on/in which the telescope rests, and what look like wheels (or part of a wheel) on either side which rides in a recess on the base. If the telescope pivots on a spindle attached to one or two uprights, it's a version of the fork mount.