Luntanado 60 query

[PEterW]

Id love to double stack my LS60 but its not cheap! I wonder if it is possible to use a 60mm Coronado richview unit on my Lunt... I guess a Thread adapter would be required??
Another question along the same line, would I be able to use the rich view unit on my 80mm wo refractor with the Lunt bf1200 blocker to give me a portable 3wavelength system!?

Cheers

PeterW

[swisswalter]

Hi Peter

3 times YES ;-)

[marktownley]

3 yes from me too Peter!

Anything is possible

[Merlin66]

Another 3 from me!
(I use the SM60 filter with a BF10 on the ED80 -majic!!)

[PEterW]

Goodie goodie. OK 2 more for..
Where is the best place to get the filter from
What is the threads that need to be adapted and who is best to make a suitable adapter up for it?

Cheers

pEter

[PEterW]

... And finally is there any risk of problems with getting any filter, I know that double stack filters used to have to be selected and setup for the scope they were going to be used on, would hate to get a lemon!

Bedtime.

Peter

[Zakalwe]

... And finally is there any risk of problems with getting any filter, I know that double stack filters used to have to be selected and setup for the scope they were going to be used on, would hate to get a lemon!

Bedtime.

Peter

I asked this of Lunt Europe. The answer was that for tilt-tuned L60s they would want to match the Etalon to the scope. For pressure-tuned then no matching is required. If you end up buying a Lunt Etalon, then make sure that it has a "f" on the end of the model number, eg LS50f. The "f" denotes that they are suitable for double-stacking.

[solarchat]

I have toured the Lunt facility and they tune all "F" series etalons a little higher than the single etalon systems so that any F will suitably double stack any non F unit. Of course, tilt tuned etalons have about a 2000ft MSL usable range for a given spacing. Lunt is at approximately 2500ft MSL so if you are outside of that range you would probably need to specify your altitude if you want a tilt tuned system. I cant imagine why you would want a tilt tuned system these days, but if you do they are still susceptible to the altitude restrictions. The pressure tuner compensates for pressures at different altitudes to bring the etalon chamber back to the air pressure at a standard altitude.

[marktownley]

Interesting to know that Stephen, thanks