Astrofail

Thanks all for reasuring me that I didnt throw my money in a black hole at least.

Anyone dealt with this guy _recently_ as either a private or business customer? Bought a custom cf tube CUF, from him for soon-to-be over a year ago but still no show. Correspondence is always prompt but only after I initiate it, not any spontaneous updates due to setbacks or delays. Those you have to ask for explicity if you want an answer, which basically by now I consider to be only excuses for whatever reasons he might have not to deliver on the order. Admittedly he has said he was beginning to step away from the cf tube business, so theres that, but if unable to deliver, dont take peoples money, or so I tought? Meh.

Oh yes, it s actually a 9999x9999 screengrab straight out of Fusion360 so there is enough resolution in there, you just have to click the image and wait for the higher resolution one to load and then it becomes redable. Sorry.

Hello, When placing the secondary in the light cone, should you go inside it with the secondary edges pruning off "useless" edge rays to minimize secondary size as much as possible or aim to capture the entire cone as much as possible? In the below schematic illustration the scope is being built around the 3" TeleVue VIP3010 Paracorr using a FTF3215B-A focuser for a final image circle of 44 mm to accomodate 36x24 sensors. The secondary shown in the illustration is a 5" placed to capture the entire cone. I am also curious if the secondary offset looks proper. Please reference the mesurements in the attached illustration. Any input/feedback welcome

Hi, FPI-Protostar claims the following formula should be used for deriving a correct secondary offset for an equatorialy mounted newtonian: (Primary diameter * Secondary diameter) / (4 * Focal lenght) However, when examining this in a cad program, it looks more like it s the thickness of the secondary mirror itself that is to be used as the offset value to obtain alignment of the optical and mechanical axis. The instrument in question is photographic only.

Hello, I m curious to know the exact outside diameter of the corrector to be able to figure out if it can fit the 3" Pegasus Astro Prodigy Microfocser. The inside drawtube diameter of the focuser apparently is exactly 76 mm while the metric conversion of 3" is 76.2 mm. If anyone has a Big Paracorr handy and wouldnt mind measuring it, I d be much obliged.

I cant figure out what this product is. Is it a new motor or a new focuser and motor? It also states theres a "precision" upgrade option from 2.3um to 0.23 um but I cant find any further formation about this upgrade either. Is this even current or just some old stuff lingering on the website? https://starlightinstruments.com/store/index.php?route=product/category&path=116_129

Shoping around for a photonewt mirror on telescope-express.de and astroshop.eu as these are the two places I ve found so far within the EU zone to avoid customs etc. Been interested in OOUK mirrors for a while as they seem to have really nice specs/price ratio compared to most everyting else I ve come across on the internet so far ...but theres these persistent end user horrror stories floating around that I come accross from time to time and it makes me really frustrated as I dont really know what to beleive or think or do nor to buy. The below link goes to a blog (belonging to?) a supposedly renowned german optician performing optics testing for end users/retailers etc. Reading through it made my hair stand on end ... https://interferometrie.blogspot.com/2015/01/orion-optics-24-research-grade-sad-story.html Can someone recommend a properly trustworthy quality manufacturer of newtonian mirrors inside the euro zone?

Lots of assumptions. I dont know if it s even possible to purchase a saddle replacement with associated electronics for the CEM70 and even if it is, the chance of it fitting straight to the CEM60 seem slim. I ve contactrd iOptron support with the question.

Which has the most durable one. Tired of little weak crappy micro USB [removed word] cables and connectors giving out on stuff

Thinking about ways to not have your imaging train sticking straight out from the side of the tube torquing the scope in all funny ways possible. So, I put down my thinking on paper. For all I know might very well only be good for wiping my Bottom with but maybe someone can detail it to me in a more precise, scientific way why ... https://imagebin.ca/v/5MI0ZnL6xius

I vew been trying to communicate with the shop where I m buying these items getting opinions on the viability of these parts working together but the mail conversation doesnt yeild much critique or feedback except "that works". Purpose of the build is galaxy imaging and budget is $5k. Looked at the 12" acf but it s way off in price compared to the 10", like $1.5k more. Stuff I already got is the main imaging camera (asi1600mm pro), guide camera (asi290mm mini) and mount (cem60). Parts list currently lacks filters and dew bands. Anything else missing I m oblivious of. Anyone shoot me down please. https://imagebin.ca/v/5E2LV6gaTeuZ