Eric Sanders: What size allen wrench did you use to collimate the secondary mirror? None
of the allen wrenches I have used will catch on anything when I put them in
Sanjay Colaco: Thanks for that mate, very helpful. I have one that haven't used for a few
years so a great video to start with collimating it first and enjoying the
Aussies skies. Whats eyepieces and barlow do you use?
Laura Bales: Anyone have any suggestions as to where I might find a video or easy
instructions as to how to clean the NexStar 130 SLT?
flowernoire: very helpful. thank you
Joseph Garcia: Awesome video dude, thank you!
Sam Akers: Most excellent! Very helpful. I was a bit hesitant to by a Newtonian
because of collimation but after I watched your video I realized how simple
the process is. So I went ahead and got the SLT 130 and am hoping for some
clear skys here in Germany soon. Danke!
SuperEdep: Hey mate they are called allen keys or hex keys in english :)
Amir Magharius: And are the eyepieces that come with the scope Plössl eyepieces or do they
just have 1 lens in them? (sorry for all the questions!) Thanks!
Carol Pearce: Thanks so much for the tutorial. Great stuff.
Familien Kring: Hi Amir. I use a Celestron 2x Barlow. Looking at the moon you need a moon
filter - I use also a Celestron moonfilter. Both products are very good. I
own different eyepieces. But you get far with the 9 and 25 mm you get with
the scope - combined with the 2x barlow - you actually have 4.5 and 12.5 mm
as well. If I should suggest you buying an eyepiece it would be a 2" one
rather that 1.25". You get a great field of view (FoV), and thats brilliant
when looking at Deep Space Objects!
Familien Kring: They can be rather firm. I wouldn't worry about putting a bit more pressure
gre99y: Hey Familien - great vid but what size was the allen key tool you used to
adjust the secondary mirror?
Familien Kring: good question. The size is not stated on the tool itself. And I couldn't
find written anywhere...not even the Celestron Manual. So I measured
it....2 mm :-)
Amir Magharius: Thanks for replying! Another quick question: What can you really see
through this telescope? If i use a 6mm eyepiece and 2X barlow, do you think
I can see the rings of saturn, cloud belts of jupiter, and ice caps of
Familien Kring: Sorry about the very slow answer. Didn't notice your comment. Yes I see the
shadow and also the clips. I have the same feeling as you, that you
shouldn't be able to see them, if the telescope-setup was completely
correct. The only thing that I know is that secondary and primary mirrors
are correctly aligned and hope this is fine. And once again sorry for that
late answer. Clear skies!
Intermouse2768: Hi the screws on my secondary mirror will not move, they are very tight and
I am worried to use too much pressure on them, is this normal?
Amir Magharius: Do you have to Collimate the telescope when its brand new? Is it really
Familien Kring: Hi. Not all my screws are in a locked position. So its okay. From time to
time just put in your collimator to check that the telescope is still
correctly collimated or adjust as acquired.
slim974: Thanks for the video, i have a question, i have dirt on my primary mirror
any idea how to clean ? Do i need to unscrew the back of the tube and take
it out to clean because it is hard to reach ?
Amir Magharius: Thanks!
Familien Kring: Thanks. I have added a post to my blog on this issue. Hope it helps if you
experience the same.
Familien Kring: And I think you wrote about collimation eyepieces. I have never tried to
collimate without the laser collimater, so you have to ask elsewhere about
that :-) try having a look at the astronomyforum, they are all very nice to
answer when you post a question.
matthew cornacchia: I figured out the problem. It seems I just needed the correct size key
which was a 2.5mm key. Thanks again for your video and post.
slim974: I luv it, but keep in mind it is a tool that require work like collimation,
cleaning and mostly dodging vibrations
Matt Fitzpatrick: Wow. That's an amazingly simple process. Thanks for putting this video
together. It should help a lot.
Cornoch: Hi there, i Have nexstar slt 130 and the same laser from Seben. My only
question is, How do i get the secondary mirror to move. Iv tried a variety
of Allan wrenches or keys and tried twisting each of the 3 holes around the
spider. Left and right. with no movement at all of the secondary mirror. Am
i doing something wrong? Do i not have the correct allan tool? The allan
key i am using does seem to grip something inside the holes but im not sure
as this is my first attempt ever. plz help
Amir Magharius: Thank you so much! What eyepieces, barrows, or filters did you use?
zbubak: HI nice done ! Actually I am very intereseted in getting 130 SLT , would be
able,please, to provide me some feedback on your experience with this
telescope ? I read a lot of review and so on and what makes me worried is
that the tripod and telescope wobbles and shakes a bit thus affecting the
view .Or maybe make your own review on youtube perhaps ?Many thanks for
Familien Kring: hi Amir. The telescope is collimated from the factory, so it should not be
necessary straight away. But I have to say, that I got my collimator after
about 3 months and that the scope needed collimation already. My scope was
sent from amazon, so it had to travel through the postal service, so that
might have had an effect. But anyway I would suggest that you collimate
your scope at least ones a year.
lukeskywalkerlol: hello, i am really struggling with the collimation of my secondary mirror.
i can hit the middle of the black ring with the laser but only with loose
screws. i can't hit the middle when i want to fix the screws. do i even
have to fix the screws or is it ok when they are just loose?
gre99y: Your a legend, thanks.
Familien Kring: To my knowledge they are plössl. In my opinion they are the best ones I
Daniel Porter: Superb video, really didn't want to try collimation until I saw this video.
Thanks for that
ctguy1955: The tool is called a "allen wrench"
Intermouse2768: Thank you, I used a pair of pliers to hold the Allen Key as it was digging
into my fingers and it worked great. Thank you Torben.
DaffyLee: Hi. The secondary mirror screws seems stuck on my 130 slt. When I try to
adjust them the laser dot moves a bit, but jumps back to its original
position when I stop adding force to the screw. Any tips?
slim974: Hi, I checked the celestron support site, they strongly discourage cleaning
the mirrors and they recommend contacting celestron factory. So I guess I
wouldn't dare to touch them
Amir Magharius: Hey again! One more question. With the Celestron Eyepiece and Filter Kit
1.25 in and this telescope, will I be able to see the same quality of
planets as what you showed me in your video? Thanks!
Rod Lang: Thank you very much, that is most helpful.
Curtis Evans: sometimes called 'allen key' (usually for the smaller ones like that.)
great vid thanks! :)
Familien Kring: As I understand it, it is a good quality kit. You will get great views with
the different eyepieces and filters. But I myself would probably only
choose another 2 eyepieces, where an 2" is among and a few filters for the
1,25". I bought a 4 mm eyepiece and I almost never use it, as eye relief is
a problem. Magnification is not always for the better, the light gathering
capability of the scope is also reduced, If you do not have a barlow, you
need that as well (its a must have).
Familien Kring: Must admit that I have never had to clean my primary mirror. I would
suggest posting the question on the astronomyforum. People in there are
always very kind to answer whatever question you might have. But am
interested in the answer as well :-)
Familien Kring: Thanks - your comment makes it really worthwhile to make a video like this
Familien Kring: Hi Tomas. Thank you for your feedback. The tripod is the weakest part of
this scope - if windy it can shake and wobble. But considering the cost of
this scope I think this is a great buy - getting goto and all. The light
weight also makes it easy to carry around so this is an advantage. I am
going to write on my experiences with the 130 slt and "must have"
accessories (in my opinion) on my blog - fam-kring.dk.
Kasda Foil: Thanks for the great vid. For now I only have a collimation cap that I made
and i'll try collimating with that. However, when I rack in the fucoser all
the way down the tube, there is a shadowed section on the left of the
reflection, is this normal? Once the secondary is aligned, do you see all 3
mirror clips on the reflection of the primary when looking into the
Familien Kring: Thanks :-)
Paa Hawkins: awesome!
Familien Kring: I noted the first time I did the collimation that the screws were quite
tight. I can't think of anything else than giving the Allen key a good
push. If the Allen key is the correct size it fits firmly into the screws
in the 3 holes.
Familien Kring: Try to loosen all three screws completely. It will take a bit more time but
start by turning each screw a bit . It will be a bit trial and error but
you will get there. And yes it will probably go completely out of
collimation in this process but you can with a bit of time get it correctly
Familien Kring: Hi again. I have made a short video on a few webcam recordings I have done
on Jupiter, Saturn and the moon with the nexstar 130 slt. You can have a
look at fam-kring.dk