Beautiful shots, Eldar! That 1D X is a creamy background machine...man, what I would give to have that kind of SNR.
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(f-ratio doesn't usually matter for planetary, as you image planets by taking videos with thousands of frames for anywhere from a couple minutes to as long as a half hour...then filter, register, and stack the best frames of the video, which is basically performing a superresolution integration...that eliminates blurring from seeing, and effectively allows you to image well beyond the diffraction limit.)
This is very interesting, and news to me. Dare I ask how that is possible? I assumed stacking would take the image to the theoretical best the setup can produce - how does it deal with diffraction? I was using my 500L with extenders to photograph planets using stacking recently, and assumed softness due to diffraction (I was at 4000mm f/40 for Jupiter and 5600mm f/56 for Mars).
Thanks for all the feedback and terrific suggestions. I had no idea this was going to turn into such an interesting topic. I have always just used a microfiber cloth to clean my lenses but am now considering some of the suggestions above.Btw - what's wrong with putting the microfibre cloth in the washing machine? What happens to it?
When I was collecting crystal whisky glasses I was advised not to dry them with a cloth that had been washed with softener as it, and other chemicals we tend to put in washing machines, can cloud the glass. How this correlates to the glass found on camera lenses I do not know, but I tend to just get new cloths rather than wash them. That said, the guy I was chatting to has never had a problem washing his, in fact he wishes the company were still producing them.
I don't think it's a huge issue but I can see the potential for problems depending on what the cloth is exposed to in the laundry process. I agree that cloth can retain various chemicals or compounds from a wash process. If I were to wash an important item like a lens cloth, I would probably just hand wash it so I can control what is introduced to the cloth in the form of dirt or other contaminants from other dirty items, soaps, grit, etc. All you are trying to do is remove some light oils, dust and light dirt from the cloth anyway. Woolite or some other delicate detergent would probably work great, then simply hang dry the cloth. If you've ever held a dryer softener sheet, you will get an idea what is left on clean clothes in the dryer. Nice for skin maybe but not for leaving smudges on lens glass.
Yeah that's a good point I don't want left over detergent / softner or lint on it plus our washing machine isn't the best at completely removing all that junk! I think I'll just hand wash them from now on. Thanks for the tip!
Very dangerous, jrista, very dangerous. Astrophotography is like boating - you start out with a $300.00 (slow) toy kayak, you end up wanting an America Cup yacht. I am at the toy kayak stage, and likely to stay there. A combination of living in the center of a "white" zone (central city to the rest of you), having a day job, no longer having the ability to easily adapt to swing schedules, and living in an often cloudy location (St. Louis MO) make serious application to astrophotography difficult. I can learn a bit at our local astronomy park, 45 minutes away in an "orange-soon-to-be-red" zone. High quality darkness is about 2.5 to 3 hours away at minimum.
Hats off to you for taking on PixInsight.
I am still drinking the Sigma DP#M koolaid because the color subtlety is very suitable for landscape, and the camera weighs ~300 grams including an aluminum L bracket/grip and can be well supported by a 1600 gram tripod/head/QR kit. Pop some extra batteries, filters, and "nodal" slide in my pocket, and I have a great fast-hiking compatible landscape kit.
Ok, I'm sticking to the sticker shock theory . I see what you mean about the non-periodic error that would be an problem. I'll keep looking at my options. This is a very expensive
Yay! more data! Hmm your view on Celestron greatly differs from those at the local astronomy club . They tend to hold the Advanced VX and CGEM mounts to a pretty high standard. I think it's sticker shock, photographers have already come to terms with $1k tripods and $2k+ lenses. The astronomers in the club haven't quite crossed that bridge yet .
The scope according to the website is about 12lb (I threw it on a scale and it's about right). The 23lb you see includes the metal case it comes with. I know it doesn't change the P2P error, but in terms of load, 120ED + 5D should be ok on the AVX?
I guess the cost difference of 900 vs 1500 is peanuts compared to everything else >.<
Glancing at his gear wish list, it looks like he's more into action than astro. An A7R is 2500 less in the budget (camera + EF adapter). Personally I would love one for portrait and landscape work, but I can not justify the expense. I suspect I'd get more use from that tamron 150-600 and a new tripod.
So, while I'd like an A7r for my landscape photography, it is actually one of the worst possible choices for astrophotography. I do landscapes sometimes, wildlife and birds most of the time, and astrophotography every time there is a clear night.
I was looking at the A7R with adapter for landscapes, but then I read on Thom Hogan's site that Sony uses lossy compression on their RAWs (unless I misread him), and you can't switch it off!
Why would they do that?
On that basis, it may have amazing DR but then it surely will just smudge out some of the detail for err, actually I'm not sure for what benefit...
Had a look at that astro link - it's a whole new language there If I understood correctly, then it's a 2000mm lens? And optically is it better than your 600mm lens with a 1.4x and 2.x attached? Just curious as to the benefits. Thanks.
Thanks for the pointers. I already ordered the reducer/field flattener that goes with this scope. I think that should help the vignetting I'm seeing right now with my 2" to 1.25" adapter + t-mount adapter + t-mount to EOS adapter.
I'm looking to get the Celestron Advanced VX mount to go with this. Any thoughts on that? Any accessories I should also pick up in one shipment? I heard the GPS unit is nifty, as is a polar axis scope. Anything else I should look into?
After mulling about for a bit, I finally decided to bite the bullet and get a telescope. After much thinking and searching I decided to get a Sky-Watcher ProED 120mm Doublet APO Refractor. I saw it as a poor man's EF 800mm. Sure, it doesn't have AF, or sharpest of corners... but, I now have a 900mm lens .
I have only started this new part of my
habithobby. There's no equatorial mount... no GOTO tracker... they'll (likely) appear in due time. I just got the scope last Thursday and am struggling with the Astrophotographer's curse, 30 days and 30 nights of rain (living in the Pacific NW isn't helping). Today was the first night I had any opportunity and for a 5 minute window, I had a break in the clouds!
I present to you a "moonscape". Image taken with a Canon EF 2x Tele + EOS 5D3 mounted on a Arca-Swiss Z1 + Gitzo 2541 at 1/320 sec & ISO 6400. The photo has been touched up but uncropped in Lightroom 5.
For the seasoned astrophotographers lurking around, any advice? I know the ISO is a tad high for this, but I didn't have a lot of time and had to make sure I got the shot in less than 5 photos.
I saw some youtube clips about Jobu II, I'm impressed. The price is slightly more than Wimberley II, therefore, I settled with Wimberley II. This is my 1st gimbal head, so far, I like the feel of wimberley II.
I'm putting extra money toward decent tripod instead