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A friend ask me about filter size, I already had a Excel sheet with that calculation. But I did a new web calculator.
It's the first version but it looks to calculate it correct, have a look:
It's not any high precision calculation, but gives knowledge enough I think.
Too small filter gives vignetting, too big filter empty the wallet.
I have recently bought an iOptron GEM45 (from FLO) and I am a bit mystified by the Zero Position. The hand control gives you the options of "Goto Zero Position" and also "Search Zero Position", but they appear to do the same thing!
Does the mount have sensors like the Home position of a Paramount, which sets the axes to an exact hardware position, or is it something else?
I guess this is the same for other iOptron EQ mounts so maybe a skilled user can enligten me.
Recently i bought this brand new camera from David Hardie when he was doing a big sell out of some really nice items in excellent offers !!!
Unfortunately the camera although brand new doesn't serve my purposes so I decided to sell it at exactly the same price which I bought it from David , it was a really special offer 🤪
The camera new costs £1685 and I will sell it for £750 to be fair....🤪🤪🤪🤪
Camera comes with all its extras and case in absolutely brand new condition....!!!!
Info from FLO site :
Postage expenses are on me, secured package.
Paypal accepted ,just buyer pays the fees.
If payment is in EURO we will just calculate the daily exchange rate at Xe.com.
Many thanks !
The weather has been so bad I have had the time to finish a video on using astro filters with the Nikon Z bodies and Nikon camera lenses. There is a manual alternative to the FTZ allowing 1.25 inch filters to be fitted between camera and F-mount lenses, and for some lenses and end of lens solution make sense. FAstroTZ is described here: