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professor emeritus

Reged: 04/21/11

Loc: NJ, USA
Lunt 100/Solarmax90? new
      #5993499 - 07/27/13 07:33 PM

Do you know the weight of the "front mounted" Lunt 100 and the Coronado SolarMax II 90mm?I am thinking of purchasing one of these, but am concerned about balance.

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Carpal Tunnel

Reged: 08/06/10

Loc: Southern California
Re: Lunt 100/Solarmax90? new [Re: bill1234]
      #5993553 - 07/27/13 08:06 PM

Lunt's website says the LS100FHa is 8lbs. I'm not at all sure how accurate that is.

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Tom and Beth
Post Laureate

Reged: 01/08/07

Loc: Tucson, AZ
Re: Lunt 100/Solarmax90? [Re: bill1234]
      #5993985 - 07/28/13 12:59 AM

I'm coming up with a bit over 7 pounds for the 90MM Etalon and tuner.

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Reged: 02/25/09

Loc: 55.215N 6.554W
Re: Lunt 100/Solarmax90? new [Re: Tom and Beth]
      #5994164 - 07/28/13 05:21 AM

I've no direct experience of the Lunt front mounted 100mm etalons but my Solarscope SF-100 is heavy enough (around 5 lbs for a single stack unit) to have a significant effect on the tube balance, though easily countered by sliding the tube to a different position on the dovetail & moving the counterweight a bit further down the Dec shaft. The weight distribution also makes the mount's job much harder, damping time for vibrations can be increased unless the mount is specified for a much heavier load than that actually used.

It's certainly something to take into consideration.

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