vlnikolic

hello everybody

i've received a new eyepiece from the seller today..

thanks for your great support.

..also i am afraid - not to damage the eyepiece components using the acetone?

47 minutes ago, Don Pensack said:

If it is fungus, you must remove it immediately or it will spread.

Try acetone on a Q-Tip first, something stronger if acetone doesn't work.

dear sir - thank you for your reply.

i am sorry if i sound silly but:

i've already used this eyepiece with the 2" diagonal mirror. in the setup mirror was under the eyepiece (horizontal telescope position)

maybe i've infected the mirror as well?

hey - vodka is always welcome
: )

i "knocked" a bit into "this" and it seems that it is "welded" on a lens. this fungus seems to be an explanation.. since it is not much distributed on the surface - maybe the best option is to do nothing hehe

according to vlaiv's suggestion on other forum i put some additional pictures of this from the other side of ocular. this looks to me really as some sort of "cloth or tiny hair like thing" and visually it seems as it is from both sides of the first lens of the eyepiece..

hello vlaiv, and thank you for joining in.. as usual you are precise and detailed with your answer

: )

super - if that is the case no need to worry much. these hair-like strings are very close to the edges - so it should not be the problem.

i was not sure if these were tiny cracks in the glass...

hello alan - yes it just looks like that.

hello everybody,

this morning i've received my st120 scope, and some equipment.. i've received lacerta 30 mm 2" ED as well.

i am not sure if this eyepiece is maybe damaged, so i would like to hear your opinion. eyepiece is very pleasant to use, and it seems to me that it works well, although i've tried it during daytime - just to check it. however it is possible to see a small cracks or maybe some foggy production residues in two sides / in the very end of the ocular. please see pictures and videos here:

https://photos.app.goo.gl/HR4PTQsfFjn6eK6F7

since i have very limited experience, my question would be:

is this eyepiece damaged?

thanks

vlad

hello everybody,

since this morning i am owner of beautiful st120.

i have not bought all the equipment yet, but i am very happy.

i have star diagonal 2", 12mm Magellan, 30 mm lacerta ed, and barlow 2x

i am not sure if this lacerta 30 mm is maybe damaged - thus i'll start another formum thread..

thank you very much for your help

vlad

hello everybody,

i'll need a few weeks to complete everything i plan concerning this telescope setup.

i'll not speak aloud now about the exact components - but soon you'll find out if i was a good pupil of yours.

thank you!

: )

p.s. idea behind high zoom variants are that i could rely more on the optic, than on my eyes that are not as they used to be..

hello again

i would like to know your opinion on these two different eyepieces configurations for st120

(diagonal mirror would be 2" 99% with adapter for 1.25 ep)

configuration1:

ep: 4mm 12mm 20mm (decent quality fov ~65) + decent barlow 2x, thus giving:

4mm+B (300x), 4mm (150x), 12mm+B (100x), 20mm+B (60x), 12mm (50x), 20mm (30x)

configuration2:

ep: 4mm 8mm 12mm 20mm (decent quality fov ~65) + decent barlow 2x, thus giving:

4mm (150x), 8mm (75x), 12mm (50x), 20mm (30x)

both configurations in conjunction with fringe-killer 1.25 (for eyepieces, and not 2" that could be attached to diag.mirr, as far as i understand)

thanks..

: )

vlaiv, thanks for a detailed reply. i think that i've leared a lot in the meantime (a lot compared to my starting position hehe)

i was thinking about yet another possibility:

SkyWatcher Startravel 120T AZ3

why?

* it's 120

* short focal length means that even less potent is for planets however, but i do presume that is somewhat in the class of meade102inf

* it has 45* amici prism, and in conjunction with az3 land observations should be very pleasant

* as far as i understand it supports 2" eyepieces, thus in perspective i could acquire 90* diagonal, barlow, and some good eyepieces for nice skygazing

0: )

btw i tried my luck  with "astronomski forum" again and hope the best

hehe

vlaiv,

thank you for a detailed explanation (hvala lepo). i've just seen that you are from novi sad, and that provides me with opportunity to ask you for even more recommendation about purchasing this thing.. and i can buy you a drink without any problem, since i am from kragujevac. since we both live in serbia - we know that availability of equipment to buy is also a limit..

makutsov is a great idea really - but i am not sure about maintenance and general robustness of these devices / is there need for collimation with this type of scopes.

: )

hello and thank you all once again for your time and energy.

i would like to have something up to 500 eur

i have idea to use it on a balcony of my house - and i have view on the hills and a factory in the front.

since i am in a town, light pollution i would categorize as medium (side lights / street lights i have to deal with as well)

i have no particular intention of moving the thing to better watching spots (at least i think like that for now). i've used to watch the land and the sky from the same balcony using the monocular 8x42 for a long time.

i would not categorize myself as a star/sky gazer, rather somebody who would like to enjoy the place he lives by observation.

vlad

Gonariu, thank you for your detail reply, i found it very useful.

ofcourse - magnifications are exaggerated with bresser, and should be max around 180 for refractor, and in real life much less, since light pollution and atmosphere in gereral..

if you have any other scope on mind, please post

thanks

hello everybody,

i would like to use a telescope for observation of landscape and observation of celestial objects. i have several scopes on my mind and i would like to have your opinion - because i would like to have one telescope for all my needs (i am not so demanding user, so i think it is possible).

i was thinking about these two refractors:

1) BRESSER Taurus 90/900 NG

https://www.bresser.de/en/Astronomy/Telescopes/BRESSER-Taurus-90-900-NG-Refractor-with-Smartphone-Camera-Adapter.html

i like this scope, because it is all-in-one package, the only downside i found is that objective is 9 cm.

2) Meade Infinity 102mm AZ Refractor

https://www.meade.com/infinitytm-102mm-refracting-telescope.html

this one i found interesting because of it's objective lens (10cm), and its length - allowing me larger field of view for landscape observations

i was thinking about this reflector as well:

3) BRESSER Telescope Spica 130/650 EQ3

https://www.bresser.de/en/Astronomy/Telescopes/BRESSER-Telescope-Spica-130-650-EQ3-parabolic-Reflector-with-Smartphone-Camera-Adapter.html

i am aware that this one is on eq mount, and that it's not for landscape observations - but i could buy eyepiece that will modify the image for landscape use, and this eq mount could be very useful for gazing into the sky. for this one i would by collimator, and this eyepiece, and i would have the complete amateur package, and for any of the refractors i could by maybe some better 6mm eyepiece, and solar / moon filter.

thanks for your time and interest, any suggestion is welcome

: )

vlad