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Hi, I've got a Skywatcher Heritage 130p reflector, and if i insert anything less than 10mm eyepiece, the image won't get crisp. I guess it's normal, but as I'm very new to astronomy, I'd like to know what the sharpness depends on exactly.
Is that the focal length (how fast the telescope is? ) or the size of the mirror and how much light it gathers? Or both affect it the same way?
Are things the same with refractors in this regard? Thanks.
Baader optical wonder solution is practically Isopropyl alcohol. Instead of £12 for a 70mL of it, buy a 1000 mL of Isopropyl alcohol for £22 (before pandemic it was only £5). They have also smaller bottles which will be cheaper of course. The Baader solution and Isopropyl alcohol don’t remove the toughest of fungi on optics, only a few of the less deep set ones can be treated with them. I have used both for cleaning eyepieces and on certain stage of cleaning several 8 to 12 inch mirrors. They both worked identical. When applied through an optical cleaning fabric, they remove ( dissolve) fatty oils and fingerprints on optical surfaces. I had cleaned a 12 inch mirror once which for some unknown reason had ice cream stain on it (cleaning followed standard operation procedure for cleaning coated aluminised mirrors).
So, I have been testing three different kind of lasers, each one is supposed to be the "best" in each category or what you want to call it, the hotech and HG is almost the same, but whit the difference in how you lock it down.
The Catseye is very different in how it works.
I made a Youtube video of my thoughts
What do you think? which one do you use?
I spend a day here to analyze my master flats and what vignetting I have on my lenses and telescopes. It's very simple done but still interesting to set figures on it.
It's done on a full frame camera and I use the values from the center and the corner of the sensor. The corner is 22 mm of from the center on a full frame sensor. I never liked to have strong vignetting in my optics, and in the future I want to go for bigger size than full frame.
I have put together a page over the vignetting I got:
Maybe interesting for some of you to have a look at.
My telescope shall handle a medium format sensor of the size 48 x 36 mm with the setup I have now. My medium format optics already do it. Just missing the medium format camera.
Hello. I am using a Orion xt8 reflector telescope. I am wondering what optic / eyepiece set up I should be using for a mix of DSO and planets. I have a couple pictures which I have taken with honestly my cell phone on one of those (Omi cellphone adaptors for telescope) and they pictures don't come out to bad... but I am looking for something that I can actually put into the eye piece that will give decent looking pictures, or even one that I can hook up to my computer and look through it live. Price really is not the biggest issue but not really looking for something over $400. I know there might not be such a thing as I am describing. most of these pictures were taken with a 2x barlow and a 20mm The ones of mars I just took with a 5x barlo and the same 20mm. and I am unsure what this star formation I took a picture of is but It looked pretty cool and I am glad that I was able to take a picture of it.. But just looking for some help choosing what camera would be best. (Obviously using the phone camera the objects appear so bright and there is no way to pull the actual detail of the planet into focus for me) But any help would be great :) Thank you for any feedback you have and I cant wait to become more active on this forum!