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SIDO

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Posts posted by SIDO

  1. I took the liberty of desaturating and fine tuning your image using "Snapseed" for Android, not bad at all for a single frame smartphone capture and you seem to have the drift method down quite well. I think they like us to post smartphone images in that section so this post might be moved by an administrator but none the less you did well like I said...

    My advice to move forward with babystepping smartphone imaging would be to add a cheap infra red blocking filter to your imaging train if you aren't using one already. I found for planets and moon this tightens up the sharpness of smartphone images of those objects considerably. It also works for solar smartphone imaging just be sure to have the proper solar filter in place in addition to the infra red filter and be sure to research solar observing before attemping it, there are some very good threads here on SGL describing well the do's and don'ts of solar observation.

    Best of Luck and Clear Skies Everyone!

                         Freddie...

    jupiter_ISO_100_exp_30inv.jpg.ed74a3ab936baea14ee9a5b00013a64a-01.jpeg

    • Like 1
  2. A 200mm dobsonian is an awesome scope, get your friend to download Stellarum or similar planetarium software and read the book "Turn Left at Orion" some earlier versions of the book can be downloaded online free and are indeed still very useful.

    Best of Luck and Clear Skies of course both of you :-)  

                           Freddie...

                         

  3. Terrestrial/Celestial Suns, Solar images shot with just a camera, no external filters but stacking, time lapse, animations and other alterations are allowed like compositions, inverts and the like. Extra points for capturing atmospheric solar phenomena and since earth is actually an astronomical object and a celestial body, this type of challenge would/should be right up the stargazers alley.

    Some of you would call these images sunsets or terrestrial, but the sun does not set does it? Ones location on earth simply rotates away from it, the separation of celestial and terrestrial, a thin invisible line drawn precariously through our intellects 😉

     

     

    • Like 1
  4. Most of the astronomy cameras in the 300 to 400 dollar range are small chip 1/3 sensor, of the two cameras I'm using in that price range I like the asi385mc it has a slightly larger sensor at 1/2 and an amp glow reduction circut wich works well the 1/2 sensor provides a bit more field of view.

    You can plug in all your scope and camera info here;

    https://astronomy.tools/calculators/field_of_view/

    This will allow you to view some target's online with your chosen camera scope combo and get the jist of matching scopes to cameras, don't forget to add in a .5 focal reducer when calculating as the reducer is commonly used to speed up the f ratio and double the field of view....

    Just select the imaging tab, the target, the scopes focal length and aperture, the cameras resolution this is the number of pixels width by pixels height, the pixel size - for the asi224 the pixels are 3.75 by 3.75 microns the same size as the asi385's are so the asi385 is the same camera with a larger chip (though more diagonal) and better amp glow control, then select focal reducer or barlow and your good to go. You can also download additional target's through the search feature and this I use often.

     

    Hope this helps.

                               Freddie.

  5. I would only add that if there is a place at your observing site where you and your dob can be in the shadows this will help, if none is available a black shall or fabric hood can be placed over ones head and the eyepiece. Some even create a darker area with building materials or items that may be close at hand, an eyepatch can also be used and lifted when observing.

    Best of Luck and Clear Skies of course...

                               Freddie.

    • Thanks 1
  6. I'm just beggining in eeva but I have already noticed the equipment needed can vary considerably depending on what size the intended targets are you interested in...Large dso or small galaxies or maybe even wide fields, how much light pollution do you have? You may need a light pollution filter and if its really bad you might want to design your rig to be portable so you and it can travel to darker skies.

    Louise is correct that astronomical darkness is waning as locations in the northern hemisphere spin south and here in the US we northerners are just pulling out of the rainy season so slow it is and has been, but if you add some additional facts like LP info what targets your after some one is likely to chime in further.

    Best of Luck and Clear Skies of course Stew...

                                Freddie.

  7. I like Johns "Core set of Equipment" place, once you refine that it becomes more a utility for process rather than a process for utility.

    My agreement with John comes more from the evolution of good reasonably offered equipment over the years where my upgrades have most often been just that...Better equipment had become available and choices and additions were availability and upgrade ability based. Now days that is no longer the case were as function form and abundance are widespread.

    With all the market offerings today one can easily find something better to trump what they have, just spend enough and its on the doorstep.

    Too easy all this my wife thinks 😉

                                Freddie.

     

    • Like 2
  8. Welcome to SGL lan, The best choices are always well considered so take your time and soak up some astro first.

    Best of Luck and Clear Skies of course 😉 

                            Freddie.

    • Like 1
  9. This looks good Stu, I hear what your saying about single frames though...

    When seeing is great I get single frames that are quite nice no stacking required and on those same nights doing video and stacking and single frames the stacks do look better than the single frames, on nights of bad seeing though stacking beats single frames by a good length but I just avoid snapping anything in bad seeing as the lure for me using a smartphone for lunar capture is a couple minutes of shooting and a few minutes more for post processing.

    I would have sharpened this a bit more but that's me 😉

    • Like 1
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