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I have just joined and have been looking around, and putting in various searches to find the answer to my question(s).
I have already found some valuable information, but i can't find a specific answer to a question i have relating to exposure times.
I have shot the milky way several times before, from a tripod and a wide angle lens. I am aware of and understand the "500 rule" and that worked fine for me at first when i was shooting with my Canon 6D Mark II. When i moved over to the Sony A7III i noticed significant trailing using the same rule and that led me to the NPF rule (Via the photopills app incase people dot know).
I am heading back to Tenerife once again in about 6 weeks time and want to buy a star tracker so i can get some really detailed images.
I have done a fair bit of research and in principle, the whole thing doesn't seem to be too daunting or difficult.
I have purchased the Polar Scope Align Pro app so i can align Polaris as accurately as possible, i will practise putting the unit together and familiarising myself with the different parts etc, but it is the exposure times that i do not understand.
My best glass is the Carl Ziess 50mm F/1.4 Planar, the 18mm F/2.8 Batis, the Sigma 35mm F/1.4 Art & the IRIX 15mm F/2.4 Blackstone.
I currently do not own, nor have i ever used a tracker, and I cannot find any information relating to which aperture, ISO and Shutter length any of these focal lengths should or could be shot at.
Is there anything similar to the 500 rule or NPF rule that relates to using a tracker with varied focal lengths? or is it just a case of stepping the lens down for sharpness and then trial and error?
Thanks in advance,
I'm a complete beginner and have a similar question. I'm thinking of buying a Celestron astro fi 130mm newtonian telescope what would I expect to see and what clarity? https://www.celestron.com/products/astro-fi-130mm-newtonian-telescope
Can't wait to get a telescope and explore the skies.
I am looking at buying one of these, and need some guidance.
Celestron Nexstar 4 SE
Sky-Watcher Explorer-130P Synscan AZ GOTO
Celestron Nexstar 127 SLT MAK
I ended up With these 3 Choices mostly because of the cost I am willing to do the first time, and it seems like they have some abilities (motorized with GoTo-options)
Priority 1: I want to observe nebulas, and galaxies (i.e. Andromeda) on a decent "zoom" and focus.
Priority 2: I want to do astrophotography.
I've read elsewhere on the forum than its preferable to have an equatorial mount for astrophotography. As far as i can see none of the above have that, even if Celestron Nexstar 4SE is promoting astrophotography on the product info. Or have i misunderstood here and one of the above has an equatorial mount?
The Product info on the Celestron Nexstar 4 SE says it has Alt-Az, EQ North & EQ South. Does this mean it has both options, az-al and equatorial mount?.
I think should add that i consider myself at least an "above beginner"-photographer, and Photoshop user. I use NIKON D810 - is this even mountable on one of the telescopes mentioned here?
I also have the Sky-Watcher Star Adventurer mini. Can i setup one of the telescopes mentioned with this and call it a telescope with equatorial mount?
I guess some of these questions might seem stupid to you, but I just dont know alot regarding telescopes yet:)
Thanks in advance for any replies.
First post on here looking for some telescope buying advise. I've searched and seen some similar topics which have been very useful but thought i'd summarise and see what the experts think.
I'm looking at getting myself and my girlfriend a telescope as an anniversary gift. She's not scientifically minded at all but she really likes the aesthetic of the moon. The house is filled with 3D printed moon lamps, jewelry, cushion covers etc.. We're about to move into a new house in Forest Hill in SE London and the new house has a really large garden backing onto more gardens so quite sheltered from all street lights. We both said to eachother a telescope might be a nice thing to have in the new house and something we can enjoy together in the new garden.
I've got a budget of up to £200 but by no means want to spend that much if I'm paying for features we don't need or will use.
I've got some experience with a reflector scope that was my brothers. He got it years ago and we both obsessed over it for about a month and then once we'd seen the big planets and a few blurry distant clusters we got bored and it never got touched again. That was a 130mm DIA reflector (skywatcher I think). After the initial excitement, my overriding feeling towards it was it was not worth the faff! This was in dark Northumberland as well, not London.
I've tried to explain this to my girlfriend when we've talked about it and said if we don't want the faff we might have to invest in a Go to electric telescope. The logic being if its quicker and easier to see stuff, we'll use it more. I did get then quite excited reading reviews and trying to find second-hand goto scopes and it seems like something in my budget (or slightly pushed budget) is something like a Celestron SLT 127. (have seen second hand ones go for £250).
However having then done a bit of reading on here I think i've worked out that those cheaper Go-to's are still not that quick and simple to use, ultimately i'm I'm still only going to see fairly blurry planets and smudges of deep space clusters. I honestly don't think the girlfriend will be impressed and I'll probably get bored after a while too.
So I think I've come to the conclusion that I want to get a much smaller refractor that would be much more accessible for viewing the moon and would allow us to see a smudgy Saturn and Jupiter on clear nights. A smartphone camera holder would be a bonus too as it adds a simple feature that would keep us entertained for longer.
Do you think that's a fair approach or am I being a little too pessimistic about what I'm going to see? If so then what scopes could anyone recommend? Stepping down to a slightly lower budget there are so many more options and it's a bit bewildering.
Having had difficulty in aligning and never actually managing to get my AVX to track to the standard I know it can, is the Celestron StarSense gadget the answer?
I know I can align my scope accurately if I put the effort in and having moved last year I’ve been unable to have my mount fixed on a pier so I’m seriously considering this piece of kit as an easier way to align and to motivate me to get out more often.
Please share your thoughts.....