Jump to content

sgl_imaging_challenge_2021_annual.thumb.jpg.3fc34f695a81b16210333189a3162ac7.jpg

How to capture comet Neowise - long or short exposure?


Recommended Posts

Hi folks,

Do you do long or short exposure to take a picture of the comet?

Plesse advise what I should set my Cannon EOS to (its an ancient camera)

I will connect to my celstron SCT 9.5” or is that too much magnification?

many thanks!

Paul

Link to post
Share on other sites

I think it'll be too much magnification. The folks who've imaged it in our local soc have either used DLSR's with lenses & either single frames or on a tracking mount - or smart phones attached to binoculars..

It is quite bright (naked eye visible) and large, pretty much fills the view in 8x42 bins / 102mm refractor.

I haven't managed to take any proper pics of it, other than with a Compact digital (non DLSR) on a fixed tripod. This is a 5 sec exposure from back garden early Sat. morning along with some Noctilucent clouds.

Cheers
Ivor

a few mins ago.jpg

Link to post
Share on other sites
33 minutes ago, Aramcheck said:

I think it'll be too much magnification. The folks who've imaged it in our local soc have either used DLSR's with lenses & either single frames or on a tracking mount - or smart phones attached to binoculars..

It is quite bright (naked eye visible) and large, pretty much fills the view in 8x42 bins / 102mm refractor.

I haven't managed to take any proper pics of it, other than with a Compact digital (non DLSR) on a fixed tripod. This is a 5 sec exposure from back garden early Sat. morning along with some Noctilucent clouds.

Cheers
Ivor

a few mins ago.jpg

Ok thanks. I thought it might be. I’ll also prep my smaller explorer 130m and attach camera to that.

So about 5 sec exposure? I’ll try 4,5 and 6 secs exposure and see how I get on.

the camera is so old it doesn’t even have live view so need to look Through the tiny  5/6mm eye viewer which is dam hard! ...you don’t even know if things are in focus lol!🙈

thanks for your reply it was helpful.

paul

Link to post
Share on other sites

I took this last night - that's 70mm 5 seconds at ISO 1600 around midnight. The only crop on it is to make it a square image - so full height, width cut slightly. This is just a basic JPEG- the RAW file is 40mb. I reckon the tail is at least 5 degrees long3BAED150-9685-4D57-98BB-DEA52D09EA13.thumb.jpeg.9e4e856d61c5aef5d3ea2736c59d18fc.jpeg 

Edited by Tenor Viol
Link to post
Share on other sites
25 minutes ago, Tenor Viol said:

I took this last night - that's 70mm 5 seconds at ISO 1600 around midnight. The only crop on it is to make it a square image - so full height, width cut slightly. This is just a basic JPEG- the RAW file is 40mb. I reckon the tail is at least 5 degrees long3BAED150-9685-4D57-98BB-DEA52D09EA13.thumb.jpeg.9e4e856d61c5aef5d3ea2736c59d18fc.jpeg 

Thanks fo sharing the settings. What a great location to observe!....unlike my back garden when it comes into view around 2am for about 20mins before going behind a tree for an hour!

Link to post
Share on other sites

There’s a hill near me but I wouldn’t want to go there alone at 1am that’s the problem 😬

do you think I should bother attaching my camera to the telescope? I’m not sure what mm lenses they are (my sister gave it to me it’s so old)

One lense is about halve a “ , the other lense is about 2-3”s

?

Link to post
Share on other sites
  • 2 weeks later...

Those are great pics. I managed to find a darkish site the other night at least darker than Bristol) and took a number of shots with a 135mm lens. I now need to process these in Photoshop. I am something of a beginner to all of this and was wondering if anybody had any thoughts on what steps to take when processing?

Link to post
Share on other sites

With some clouds about I managed 40 x 60 seconds at ISO-800 with a 55mm prime lens on my Canon DSLR.  I used a driven mount so I did not have to worry about guiding since my exposures were short. 

This was stacked and processed with Astro Art7.   Tonight I plan to use about 100 x 30" at ISO-800 to reduce the noise some.


 

C2020F3-AvgStk2-crop-GR-DN-CB-Sat-STR-small-2-LBL.jpg

Edited by CCD-Freak
Link to post
Share on other sites

Here is one from a couple nights earlier.  40 x 60 seconds at ISO-1600 and no clouds.  Canon "Kit lens" at 85mm.

Stacked and processed with Astro Art 7.  The clear sky made a great deal of difference.

 

C2020F3-Cal-AVG-LogStr-DN-CB-Sat-small-1-LBL.jpg

Edited by CCD-Freak
Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now
  • Recently Browsing   0 members

    No registered users viewing this page.

  • Similar Content

    • By Planetarian
      Just thinking how this setup would compare to normal astrophotography setups. Imagine a Nikon coolpix p1000 on an equatorial mount. Has anyone done that yet? 
      As I saw in the YouTube videos about the camera, it has absolutely no chromatic aberration, so I assume it's got apochromatic lens. It's magnification is extremely good (125x with 16MP sensor). The aperture is quite small tho compared to many different refractors available. 
       
      So what do you think about the idea:  astrophotography with a Nikon?  
    • By stevebb
      Comet Neowise above Filey Country park
    • By FireNIceFly
      Hello, 
      I've been into astronomy since I was young and more recently astrophotography. I've just (finally) got my new telescope, a Celestron AVX 9.25" Edge HD with various accessories including a reducer lens. I'm still trying to get the auto guider up and running as that's being a pain and need to get a dew heater for the telescope (currently lookjng for a decent one). I'm also looking into what filters to get as well as that's still fairly new to me, at least for the astrophotography side. 
      I'm also very much into microscopy and looking at microphotography, I'm currently saving up to get a new microscope. 
      I've also got a facebook group where I share astronomy and science news, where members can share astronomy and science news or their own astro or science images, discuss things, etc. https://www.facebook.com/groups/2494142714158646/?ref=share
      Anyway, hello to all from Cambridge, UK :-) 
       
      Adz



    • By Rayand
      Hello all, 
      As a camera club photographer with 20 years of dabbling in almost every genre, and after spending half a dozen nights imaging and then processing Milky Way and star trails with a full frame DSLR and decided that in my retirement I was going to become better acquainted with the rest of the universe. Well, if only it were that simple.......
      I've now spent a week or more over the last couple of months watching numerous you tube vids and loving the wonders that are captured by talented individuals who generously share their experience with the uninitiated. 
      On the basis that I don't want to spend more than is necessary, but don't want spend too little buying  equipment that isn't going to give me acceptable results any guidance would be welcome.
      So far I think I need an equatorial goto mount, a triplet refractor, a mono camera , a filter wheel and filters and a guide scope.
      The six million dollar question I suppose, is what do I want to image, and the answer is I don't know yet. I am attracted to galaxies, and nebulae, but I suppose that it would be remiss not to look at other objects as well. Presumably with the right mount and connectors and perhaps a second shorter focal length scope, wider field images could also be taken.
      I am not averse to buying used if that helps me achieve more versatility for my budget which is around £3.5k
      I understand I've a long way to go from novice to achieving results that I will be happy with, but we all have to start somewhere. Oh and I realise that there will be many frustrations of user error  to encounter and also other accessories that I am blissfully unaware of that will become the next must have in search of Nirvana, but how else would I spend my retirement?
      So I know one day clouds will be my problem, as well as light pollution, but for now not knowing what to buy is what I'm finding insurmountable. Your suggestions are eagerly awaited
    • By lainev
      Saturn and Jupiter in the Southwest sky at 19:30est on December 5. Globular Cluster M75, Saturnian moons Rhea and Titan, and Jovian moons Ganymede, Callisto, Io, and Europa are also visible.

      Sony a6400, 69 light frames, darks, flats, dark flats, and bias. 8 seconds, f6.3, 321mm, iso400. Stacked in DeepSky Stacker. Processed in StarTools and Photoshop.
       

×
×
  • Create New...

Important Information

We have placed cookies on your device to help make this website better. You can adjust your cookie settings, otherwise we'll assume you're okay to continue. By using this site, you agree to our Terms of Use.