Thank you for the video, all information is very clear. I bought second hand Nexstar 6SE and It was without use but absolutely dirty. I opened it and cleaned according to your recommendation. Now It is perfect. Thanks from Spain.
Thank you so much for your video. I cleaned my Celestron 8se and couldn't focus it afterward. I went back to find the key info within your video at minute 8:36. I had it upside down!
Dein Video hab ich interessiert bis zum Schluss angesehen. Ich besitze ein Meade SSC 10, welches ich schon Jahre vernachlässigt habe (gut gelagert). Falls ich es mal zukünftig reinige, gab mir Dein Video wertvolle Hilfe. Ebenso Deine ruhige und verständliche Art zu sprechen. Toll gemacht!
Don't clean mirrors like that. This will certainly leave tiny scratches, and won't get rid of dirt if there is any from fogging up. Either use some specialized cleaning alcohol pads (like Zeiss, quite cheap in alli express), or better to remove the mirror completely, wash it (without touching) in warm water with a bit of dish washing soap, then wash with clean water, and then wash with medical distilled water and let it dry on one side, while absorbing the largest drops with a tissue edge. Fingerprints can be removed with alcohol pads or small cotton pads soaked in alcohol. Acetone is acceptable for really bad spots cleaning, but only on disassembled mirror, so none gets on plastic parts.
Good to see you back. Not sure if I am brave enough to attempt the steps. My 8se is only 6 months so it is looking fairly clean. Keep the videos coming!
Thank you Baltier, I can see you are a really handyman, If celestron see this video they contract your services jajaja. But anyway, the most important is you teached us with all your videos to no be scare with telescopes, and give to it a good mantenaince. Thank you again for all your help. !!!!!
Yes, I would check the collimation. However, since you will be placing everything back in the very same spot, you shouldn't have any collimation issues afterwards. Thanks for watching, Clear Skies!!
Hey guy ! Are you still around. Hope so....wanted to tell you that I had a crazy problem with my 8 SE and had to get inside and YOUR video was the ONLY vid that I could find that made any sense at all. Much appreciated...thank you. i DO have one question for ya if you are still around and are still into telescopes...if not, that's cool too. Anyway, thanks again.. Kevin Bolin Katy, Texas 🔭
I just inherited a Celestron 8 inch telescope like yours. Everything in the tube is broken, the primary mirror, the secondary is gone, along with the front glass. Literally, it's an empty tube. Can I still get the missing parts from Celestron? It's a model from the 1980s.
Gracias por tu claridad y elocuencia, amigo. Tu video me ha ayudado muchísimo. Que Dios te bendiga por tu buena onda. Te dejo un gran saludo desde Buenos Aires, Argentina. Roberto Feliba
There are gaps between the orange tube body and the black front and rear covers. Seal them up with something like bluetac after cleaning will help to keep dust away for years. Otherwise dust will enter the scope very easily and the last thing you want to do is to clean the mirrors.
Hello, I am going to be checking out a Nexstar 6 SE for a friend this weekend. He tells me the focus doesn't work and something is rattling around inside the rear of the tube. I'm thinking that the focuser-to-mirror arm must have slipped a screw. Should be an easy fix if so. Can you advise on removing the primary mirror from the rear tube in order to access the focuser arm? Thanks, Tom Epps
thanks for this video, i might have to do the same shortly as a rather visible spec of dust is on my main mirror. One question though, do you need to check the collimation afterwards?
El vídeo esta muy interesante, y igual que tus otros vídeos de usted, están dando un gran aporte a los aficionados novatos, lo que poco a poco los de habla española, te agradeceríamos muchísimo que los vídeos más interesantes grabes alguno en Español Saludos desde España
Your video is exceptional even almost 10 years later. My focuser is broken. Do have a video that covers that repair. If not, can anyone guide me to useful information on how to access and fix focuser? Thank you.
Thanks a lot Baltier! I am from Brazil and I as looking for that kind of information but could not find anywhere. I will have to disassemble the telescope because I am afraid to transport from USA to Brazil can damage something.
Take up the rear part with the mirror didn't work for me the inside hexagon "screwwheels at the inside of the tubus "rondells" started to rotate togheter with the screws I tried to screw up from the outside. I have an 8SE and I don't recommend taking up the rear part of the scope. It will be very difficult to put the mirror back inside if your wheels fall off the screws on the inside of the telecope. So it seems that not all Nexstar Telescopes are build in the same way. In this video you can see after he left the rear part of the telescope that the screwwheels at the inside of the telescope are attached in some way to the tubus. Cheers Gaetano
Thanks for sharing your amazing video! I find it's very useful but could I use your way apply to my LX200 10" telescope? It has been serving over 11 years and I think it's time to clean dirt and fungus over my second and primary mirrors. Perhaps the structures between Meade & NexStar are different but both of them share some similar components. I hope I could fix it by myself!
Need to be careful on the 8SE -- the four countersunk Phillips screws that hold the tube to the reflector portion have a nut on the inside of the tube. The nut needs to be gripped with something or it will just spin.
Hola Baltier, 3 preguntas: 1) My corrector top glass/mirror, has figer prints. how do I clean that the best way? 2) I added a 2" 45 degrees attachment so I can use my 2" eye pieces, but now I want to use the original eye piece but the adapter can't be remove and I am afraid to break it, how is the best way to remove it? 3) I have a canon 5D Mark ii and would like to attach it to the 6SE, what do I need to get? Thanks y muchas gracias :)
You must NEVER clean a lens or a mirror with a cloth or fabric ! It can always be microscopic dust particle on it that will scrach the surface. AVOID absolutely. instead use distilled water and chirurgical cotton.
Not necessarily true. Although you would never do this to a digital camera's sensor, cleaning (low expansion) glass this way is not a problem. What grit do you think they polish glass with? And "chirurgical cotton" IS a type of cloth/fabric.
hola me compre un telesopio de estos hace una semana y seria muy bueno que pusieras mas videos en español, por favor como se conecta al pc y de donde descargo controladores para la camara neximage
Would have been less distracting if the bird had been elsewhere, out of earshot, as well as other voices and sounds.. I also agree with several others that a 'clean' towel or cloth should never be used to wipe either the mirror or corrector. If a cloth is used, it should be a new optical microfiber cloth, and only after the heaviest contaminants have been removed with a liquid and/or compressed air..
20:05 be careful speaking across your exposed primary mirror--wear a face mask, tiny saliva spots are much worse than dust--they can't be blown away. BTW, Celestron manuals detail wet cleaning of the corrector plate by us users--if it's out why did you decide not to 'wet' clean it? Much less risky than approaching a fairly clean primary with a dry towel (21:53) which risks sleeks at the least. On any large optical surface, it's recommended to wet wipe using the correct formula, using 'weightless' strokes centre to edge. SCT manuals warn of never approaching a primary mirror, unless you're an experienced, trained optical technician with appropriate facility and equipment.
I looked in horror using a towel on your mirror. You use water with a drop or dishwasher liquid and use pure cotton balls. No pressure on mirror and just enough to wet your mirror. Finish off with distilled water and cotton balls again just using enough to wet the mirror, then dry it off with cotton balls, these have to be pure and just weight of the balls. Never use a towel.
NEVER handle optics with your bare hands because of the oil on your skin. No matter how careful you are there is always the risk of oil getting on the glass or mirror. Wear cotton gloves always. Also, do not use the same surface of the cloth when you wipe. Wipe a small section and then use a new surface of the cloth to wipe another section.
I'm 3 years late but, yes. I did that when I noticed my 6SE had a cloudy film on the inside of the corrector plate. So I removed those 4 screws and took the whole front ring/corrector plate assemble off. Cleaned it with PEC pads and Eclipse methanol lens cleaning solution. Looked brand new when I was done. Put the whole assembly back on and put the screws back in and it was perfect. No change in collimation or anything. This might not work for the larger OTA's,, but it worked great on my 6SE OTA.
i cant wait to read the comments to this video lol, you ruin that mirror and its only use is the bathroom. mirror might be scratched but at least you will look good brushing your teeth :)
Worst thing you can do!! Then you have to comilate your telescope!! I am disgusted and angry now I have to send my 5se telescope to celestron!!!! Do not take apart!!!
Never touch a first surface mirror with anything, guarantee that this mirror is now damaged. Not only that but this scope is now out of columniation guaranteed, the corrector lens has to be perfectly centered and the only way to do it is on a columniation bench. Not to mention the secondary mirror. BAD IDEA!!!!
Mike Lynch I totally agree . The Celestron 6se is a rather expensive scope not a cheap department store knock off. I'm sure he could arranged to have everything cleaned back at the factory. Not that I'm an expert but that's what I do , beside the scope would have to be decades old to need this type of maintenance.
![Noob To Max With DRAGON REWORK In Blox Fruits [FULL MOVIE]](http://i.ytimg.com/vi/LnBMOinoOvA/mqdefault.jpg)
One of the better how to videos in all of RUclips. I have a 6E myself. Well done Sir.
I love your 'no nonsense, let's get the job done' videos!!
Thank you for the video, all information is very clear. I bought second hand Nexstar 6SE and It was without use but absolutely dirty. I opened it and cleaned according to your recommendation. Now It is perfect. Thanks from Spain.
Thank you so much for your video. I cleaned my Celestron 8se and couldn't focus it afterward. I went back to find the key info within your video at minute 8:36. I had it upside down!
Thank you sir ! Your video allowed me to proceed with cleaning my celestron SCT with a bit more confidence.
Thank you for taking the time to do this. I am just starting out being overwhelmed by a multitude of options.
Thank you for taking your time to share this valuable information
Dein Video hab ich interessiert bis zum Schluss angesehen. Ich besitze ein Meade SSC 10, welches ich schon Jahre vernachlässigt habe (gut gelagert). Falls ich es mal zukünftig reinige, gab mir Dein Video wertvolle Hilfe. Ebenso Deine ruhige und verständliche Art zu sprechen. Toll gemacht!
Don't clean mirrors like that. This will certainly leave tiny scratches, and won't get rid of dirt if there is any from fogging up. Either use some specialized cleaning alcohol pads (like Zeiss, quite cheap in alli express), or better to remove the mirror completely, wash it (without touching) in warm water with a bit of dish washing soap, then wash with clean water, and then wash with medical distilled water and let it dry on one side, while absorbing the largest drops with a tissue edge. Fingerprints can be removed with alcohol pads or small cotton pads soaked in alcohol. Acetone is acceptable for really bad spots cleaning, but only on disassembled mirror, so none gets on plastic parts.
Thank you so much. I'll approach cleaning my C8 with much more confidence thanks to you.
thank now i can clean my telescope and go star hunting. Great class on how to clean a Celestron telescope!
Thank you for your informative videos! I am a new(to me) 6se owner and have learned a lot from watching your channel.
put me at ease, thankyou so much for kev in the uk
Good to see you back. Not sure if I am brave enough to attempt the steps. My 8se is only 6 months so it is looking fairly clean. Keep the videos coming!
Thank you Baltier, I can see you are a really handyman, If celestron see this video they contract your services jajaja. But anyway, the most important is you teached us with all your videos to no be scare with telescopes, and give to it a good mantenaince.
Thank you again for all your help. !!!!!
Thanks for your excellent demonstration. It will save me time, frustration, and possible damage to scope. MJB
Yes good on cleaning telescope. Do you know how to get rid of No Response 17 code error
Yes, I would check the collimation. However, since you will be placing everything back in the very same spot, you shouldn't have any collimation issues afterwards.
Thanks for watching, Clear Skies!!
Does the focus knob suppose to be bent a little bit or is it suppose to be straight?
Hey guy ! Are you still around. Hope so....wanted to tell you that I had a crazy problem with my 8 SE and had to get inside and YOUR video was the ONLY vid that I could find that made any sense at all. Much appreciated...thank you. i DO have one question for ya if you are still around and are still into telescopes...if not, that's cool too. Anyway, thanks again..
Kevin Bolin
Katy, Texas 🔭
Hello, at 2:58, what did you do to remove it from the arm. Looks like you just lift it off? Mine is attached, "somewhere", not sure how to release it.
I just inherited a Celestron 8 inch telescope like yours.
Everything in the tube is broken, the primary mirror, the secondary is gone, along with the front glass. Literally, it's an empty tube.
Can I still get the missing parts from Celestron? It's a model from the 1980s.
I have a nexstar 6 se .Is the Focus knob suppose to be bent a little bit or does it suppose to be straight?
Very helpful Video! thank you dude and greetings from Germany !
Gracias por tu claridad y elocuencia, amigo. Tu video me ha ayudado muchísimo.
Que Dios te bendiga por tu buena onda.
Te dejo un gran saludo desde Buenos Aires, Argentina.
Roberto Feliba
Thanks you for the kind comments!
Have clear skies!
What The Mark Look Like On The Collector Plate To Line It Back Up To Put It Back In The Tube
Very helpful, many thanks!
There are gaps between the orange tube body and the black front and rear covers. Seal them up with something like bluetac after cleaning will help to keep dust away for years. Otherwise dust will enter the scope very easily and the last thing you want to do is to clean the mirrors.
i thought about doing this to keep dust out of my 'telescope,. dosent it help with cooling having those gaps there do u know?
thank you for this video i sure needed the help!!
Outstanding video! Have you or anyone tuned up the NexStar mount drives?
Te he descubierto ayer y veo que tienes videos interesantes, Baltier, ¡sigue así!
¡Saludos desde España!
Love the video no nonsense!❤
Great Video's!
Question:Have you ever disassembled and cleaned one of the Plossl eyepiece's (17mm) successfully?
Thanks
Hello, I am going to be checking out a Nexstar 6 SE for a friend this weekend. He tells me the focus doesn't work and something is rattling around inside the rear of the tube. I'm thinking that the focuser-to-mirror arm must have slipped a screw. Should be an easy fix if so. Can you advise on removing the primary mirror from the rear tube in order to access the focuser arm?
Thanks,
Tom Epps
thanks for this video, i might have to do the same shortly as a rather visible spec of dust is on my main mirror. One question though, do you need to check the collimation afterwards?
Excellent video.
Anyone know what the procedure is for a Meade LS 6? The tube seems to be fixed at the bottom end. I seem to have a very mucky mirror.
El vídeo esta muy interesante, y igual que tus otros vídeos de usted, están dando un gran aporte a los aficionados novatos, lo que poco a poco los de habla española, te agradeceríamos muchísimo que los vídeos más interesantes grabes alguno en Español
Saludos desde España
I was collimating the secondary mirror and it fell through. 😨. What should be done now. thanks
Your video is exceptional even almost 10 years later. My focuser is broken. Do have a video that covers that repair. If not, can anyone guide me to useful information on how to access and fix focuser? Thank you.
можно поискать ..вам нужно срочно??
Hello Baltier,,
I have NexStar 6SE
But the corrector plate is broken.
How i can get a new one ??
Can you tell me what kind of screws are holding the corrector plate on? I have the same scope but the heads of the screws are odd looking.
What kid of cloth did you use to wipe the mirror? Thanks for the video
Thanks a lot Baltier! I am from Brazil and I as looking for that kind of information but could not find anywhere. I will have to disassemble the telescope because I am afraid to transport from USA to Brazil can damage something.
Take up the rear part with the mirror didn't work for me the inside hexagon "screwwheels at the inside of the tubus "rondells" started to rotate togheter with the screws I tried to screw up from the outside. I have an 8SE and I don't recommend taking up the rear part of the scope. It will be very difficult to put the mirror back inside if your wheels fall off the screws on the inside of the telecope. So it seems that not all Nexstar Telescopes are build in the same way. In this video you can see after he left the rear part of the telescope that the screwwheels at the inside of the telescope are attached in some way to the tubus. Cheers Gaetano
Thanks for sharing your amazing video! I find it's very useful but could I use your way apply to my LX200 10" telescope? It has been serving over 11 years and I think it's time to clean dirt and fungus over my second and primary mirrors. Perhaps the structures between Meade & NexStar are different but both of them share some similar components. I hope I could fix it by myself!
Need to be careful on the 8SE -- the four countersunk Phillips screws that hold the tube to the reflector portion have a nut on the inside of the tube. The nut needs to be gripped with something or it will just spin.
Thank you. This was extremely helpful.
я согласен, это лучшее видео по разборке этой трубы!!привет из Казахстана !!!!
Hola Baltier, 3 preguntas:
1) My corrector top glass/mirror, has figer prints. how do I clean that the best way?
2) I added a 2" 45 degrees attachment so I can use my 2" eye pieces, but now I want to use the original eye piece but the adapter can't be remove and I am afraid to break it, how is the best way to remove it?
3) I have a canon 5D Mark ii and would like to attach it to the 6SE, what do I need to get?
Thanks y muchas gracias :)
You must NEVER clean a lens or a mirror with a cloth or fabric ! It can always be microscopic dust particle on it that will scrach the surface. AVOID absolutely. instead use distilled water and chirurgical cotton.
Not necessarily true. Although you would never do this to a digital camera's sensor, cleaning (low expansion) glass this way is not a problem. What grit do you think they polish glass with? And "chirurgical cotton" IS a type of cloth/fabric.
hola me compre un telesopio de estos hace una semana y seria muy bueno que pusieras mas videos en español, por favor como se conecta al pc y de donde descargo controladores para la camara neximage
Precise instructions! Thanks
Thanks, I hope it works well for you!
Cheers, this was a great help.
MUY BUEN VIDEO S GANO MI SUBSCRIPCION Y UN LIKE, SALUDOS DESDE, PUERTO RICO 🇵🇷
Would have been less distracting if the bird had been elsewhere, out of earshot, as well as other voices and sounds.. I also agree with several others that a 'clean' towel or cloth should never be used to wipe either the mirror or corrector. If a cloth is used, it should be a new optical microfiber cloth, and only after the heaviest contaminants have been removed with a liquid and/or compressed air..
If you clean your mirrors like this guy, risk micro scratches
Muchas gracias por el comentrario. Me alegra saber que esto se ve hasta el contienente europeo.
Saludos!
con que se puede limpiar bien el cristal del espejo secundario?
Great video but, doesn't work on 8SE the o optical shield will not just pull out , there are like 5 or 6 sunk screws holding the 8SE in.
its a different plate on 5se it has 4 screws and i cant put it back on.
Thank you ,
Outstanding!
Very well explained with picture thank you (FRENCH)
Hello Baltier,,
I have NexStar 6SE
But the corrector plate is broken.
Contact Celestron customer service
I have to do this in my c90 celestron. 😢
20:05 be careful speaking across your exposed primary mirror--wear a face mask, tiny saliva spots are much worse than dust--they can't be blown away. BTW, Celestron manuals detail wet cleaning of the corrector plate by us users--if it's out why did you decide not to 'wet' clean it? Much less risky than approaching a fairly clean primary with a dry towel (21:53) which risks sleeks at the least. On any large optical surface, it's recommended to wet wipe using the correct formula, using 'weightless' strokes centre to edge. SCT manuals warn of never approaching a primary mirror, unless you're an experienced, trained optical technician with appropriate facility and equipment.
Very good and didactic !
I looked in horror using a towel on your mirror. You use water with a drop or dishwasher liquid and use pure cotton balls. No pressure on mirror and just enough to wet your mirror.
Finish off with distilled water and cotton balls again just using enough to wet the mirror, then dry it off with cotton balls, these have to be pure and just weight of the balls.
Never use a towel.
NEVER handle optics with your bare hands because of the oil on your skin. No matter how careful you are there is always the risk of oil getting on the glass or mirror. Wear cotton gloves always. Also, do not use the same surface of the cloth when you wipe. Wipe a small section and then use a new surface of the cloth to wipe another section.
Like the Apple logo on your scope.
iTelescope ?
You forgot to mention you might have to collimate!!
good
Can't you just pull the whole front ring (4 screws)?
I'm 3 years late but, yes. I did that when I noticed my 6SE had a cloudy film on the inside of the corrector plate. So I removed those 4 screws and took the whole front ring/corrector plate assemble off. Cleaned it with PEC pads and Eclipse methanol lens cleaning solution. Looked brand new when I was done. Put the whole assembly back on and put the screws back in and it was perfect. No change in collimation or anything. This might not work for the larger OTA's,, but it worked great on my 6SE OTA.
neat
hazlo en español por favor...
The tape was pointless of remembering were the lens was in its original position
Good vídeo for desassambly but bad vídeo about clean
i cant wait to read the comments to this video lol, you ruin that mirror and its only use is the bathroom. mirror might be scratched but at least you will look good brushing your teeth :)
17:20 photobomb
Why? Nothing good can come of this. No reason to disassemble this telescope.
If the corrector plate and mirror are dirty they need to be cleaned
Worst thing you can do!!
Then you have to comilate your telescope!!
I am disgusted and angry now I have to send my 5se telescope to celestron!!!!
Do not take apart!!!
Never touch a first surface mirror with anything, guarantee that this mirror is now damaged. Not only that but this scope is now out of columniation guaranteed, the corrector lens has to be perfectly centered and the only way to do it is on a columniation bench. Not to mention the secondary mirror. BAD IDEA!!!!
Mike Lynch I totally agree . The Celestron 6se is a rather expensive scope not a cheap department store knock off. I'm sure he could arranged to have everything cleaned back at the factory. Not that I'm an expert but that's what I do , beside the scope would have to be decades old to need this type of maintenance.
kinda over reacted there bud.there are only three scres to comilate the telescope .just takes some time