In the cropped image, we can see better the stars and details in the Orion Nebula and Running Man Nebula.īaader UHC-S Nebula Filter – 2" Round Mounted Image I No filter 42 min Iso 800 F/5.1 Tecnosky SLD 70/420 at 357 mm focal length Nikon D7200 Now let’s see also some longer imaging plans 42 min total exposure with and without filters: I did observe similar diffraction spikes on other telescopes of other brands even expensive ones, I think is more of a luck situation, you might have them or not, but as i said before, is a small issue that can be solved or even ignored since the quality of this telescope was amazing. When i took the first tests with the Orion Nebula I had some clouds, and because of that we can see some halos around the bright stars.Īfter zooming in 200-300 % i observed some small diffraction spikes on the bright stars, this was hard to noticed, only if i zoomed in, and seems to be caused by the optics being just a little too tight,( many telescopes have the screws tighten to avoid decollimation during transport) This is a small issue, but it can be solved using the warranty or by removing the dew shield and unscrew the collimation screws and screw them again until they touch the glass.( I got this information from Tecnosky) I might attempt this in another video, or just use it like this since i was able to notice them only in some images zoomed in. Second image I used the native 420mm focal length of the Tecnosky 70/420 Apo Triplet Refractor In the first image i used the 0.85x reducer Now we have a few images with Orion Nebula with and without the reducer corrector 0.85x (for the skywatcher Ed80) The Orion Nebula, single exposure, with the Optolong L enhance and Tecnosky 70/420 apo, cropped (focal length used 357mm) 58 sec iso 100 In this cropped Image (from the original at 420 mm focal length without corrector) with the Pleiades we can see the stars elongated at the edges of the imageįor all the tests i used my Nikon D7200 Dslr camera Here is a link only with corectors so you can use at 420mm with a corrected fieldĪnd here is the link for my reducer/corrector for the Skywatcher aEd80 that i used in the video The Tecnosky Sld 70 does not have a dedicated corrector but should work good with the reducers/corector mentioned above. If you do not have already a corector, or you want to buy one for the telescope from Tecnosky I will link a reducer/corrector and corrector for the Tecnosky SLD 70/420 Apo Triplet :Ġ.80 Reducer/corrector that corrects the field up to full frame sensors G.A.M Astrophotography Club – Galaxy Art Media:Įxtension Tube M48/M48 (6mm) placed between reducer and the M48 adapter with Nikon bayonet that is attached to the camera You can see also the images on my social platforms, and also the equipment used, in the links bellow. You can find the Tecnosky 70/420 Apo Triplet at : Balancing in Ra and Dec axis went well without any problems The FPL 53 glass helps this telescope obtain very good images free of false color.Īlso being lightweight (1.85kg), you can use this telescope also with a star tracker and is easy to transport or attach on a tripod were also features that I did like.īalancing the telescope on the mount was fast and easy to do. I liked the good image quality and good color correction, contrast and sharpness of this telescope. ![]() We have Quality control from Tecnosky and collimation is verified The stability and resistance to vibrations of this focuser was amazing! I tested this while testing the ha 7nm filter, and i forgot other exposure time in the second image with the Optolong L enhance but we can see that the focus did not change. I used for this tests a bahtinov mask and i made a fast focus because i had clouds, was not perfect but good for the test, the idea is to see if the focus will change or not. I have tested first when changing the filters, however the baader Uhc-s Nebula filter and the Optolong L enhance do have a small focus difference, so i made another test with Optolong L enhance I just took the camera out and place it back having the filter one. I was able to rotate or take out the camera from the focuser without losing focus. ![]() The draw tube has also a nice pressure ring, and is very stabile. I was impressed by the quality and stability of the focuser, is a 2” rack and pinion that can carry loads up to 2kg and comes with a microfocuser 1:10 knob.
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