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A few GM8/G11s have been converted to stepper operation by members of /g/onstep /g/onstep. Stepper drivers, basically current amplifiers, have come a long way since

Bryan I agree.? Look at the weight of a slave vs li-fe-po4, though.? An sla gives you a good workout lugging it around! Chuck Sent from my Samsung Galaxy Tab?|PRO

Right – what he said ;) Thanks Brian Brian Valente Brianvalentephotography.com Sent: Friday, December 8, 2017 12:28 PM To: Losmandy_users@... Subject: RE: [Losmandy_users]

At 0.5 A, a 22 Ah battery would be good for 22 hours on the basis that these types of batteries should not be discharged to more than 50% pf their capacity. 22 Ah*50%/0.5A = 22 hours I have

On power, you might consider using a lithium iron phosphate battery.? It is tolerant of temp unlike lithium batteries but is not cheap.? But it is lighter and, with purchased battery charger,

Ditto B, I use two 55 amp-hr batteries to power all my imaging equipment each session. John Hobbs hobbs_john@...

yes, they will definitely work. Car starter batteries are more designed around offering a maximum amperage to kick over the motor. for astro that's not important - instead we want greater

Yes for that amount of money you ca buy a 50 Amp/hr battery. John Hobbs hobbs_john@...

But if you buy a bare battery you of course also need a charger, connectors for whatever you want to hook to it, an inverter if you have stuff that needs 110VAC, and probably some kind of case. Going

I bought the jump-start battery with minimum number of bells and whistles at Harbor Freight for about $50. It ran all night with my G11GT and still showed a green led saying it was charged.

I had a problem with my Gemini I controller recently: https://groups.yahoo.com/neo/groups/Gemini_Users/conversations/topics/30861

I'm not sure that's a great battery for astro (although that seems like a good price for a general battery safety thing). 1200 amps is the max for starting a car, which is not important for steady

For a battery pack? check out Lowe's they have a Shuemacher 1200 hundred amp power pack on sale for $100It has 12 volt Outlets plus a 110 inverter.? Shop Schumacher Electric 1,200-Amp Car Battery

There is the Explore Scientific GoTo system which can be retrofitted to G-11 mounts. It uses stepper motors that are not noisy. The best information about this that I have found is

Thanks! I noticed that Telescope Express sells stepper motors: https://www.teleskop-express.de/shop/product_info.php/language/en/info/p2996_ESCAP-stepper-motor-kit-for-Losmandy-G11-and-GM8.html

Thank you all for the help! I just got my GM811GHD! I bought a large rolling toolbox from home depot and bought some foam online to make a cheap but protective case such as the pelican cases (not

Magnus, The stepper motors are the original motors used on the G11, they do not support Go To, just tracking and guiding. I replaced them only because I wanted to remotely control my

Hi! A slight detour from the topic, but as I'm trying to get to know the full landscape: - what stepper motors? I see that there are stepper motors sold by Losmandy, and another set for using with a

Agree, PoleMaster is quick, easy and accurate. Dave...

Chip, It’s funny you should say that, the first thing that people comment about when they see my tucked in motors is “they are a lot quieter than normal”. I hadn’t noticed because I moved