Telescopes
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自制光轴调整注意事项之一
自制牛反望远镜的弯路之一……说出来让大家有问题的可以参考下。买了某师傅的150F4镜片，怎么调整光轴都不对，最后发现原来是中心标记不对，现在重新贴了就对了，星点对比如图，借助了下工具确认中心点…… 自带的标记不在中心，买过这个师傅镜片的应该看得出来，师傅用的三角标记 调整后位置，看得到原来的印，用厂里的投影仪确认过，基本在中心了。就是用手揭贴纸把镜片弄花了点…… 为了测试下是不是自己做的碳纤维桶的问题，还去上了个小型三坐标……碳纤维桶是用的夹心结构，内部放了泡沫夹心，整体厚度很厚，所以刚度很好。 调整标记后位置比较准了 没调整标记的，星点像飞机长了翅膀或者是3角形 没调整前的，星点像飞机 调整标记后M42一分钟单张，调整标记后好很多了，虽然还有点椭圆，可能和调焦和慧差镜有点关联吧 成都天气就一个小时数据叠加，虽然天气灰蒙蒙的。 最后来个全家福！
Matty, the balcony astrophotographer
What is the best cheap Camera ?
Hey Guys so i have a telescope that is quite good however i found out that I need a camera to get better pictures, do you guys know a cheap camera (possibly 100€ or under) that is good?
星系团。
请问8.98分米主口径的里奇-卡塞格林系统望远镜的制作难度有多大？
我想制作台主口径8.98分米的里奇-卡塞格林系统望远镜，但是不清楚这种望远镜具体的制作难度，并且在制作过程中会有哪些问题、适合哪些材料等，请问有人知道吗？
NightlyAndy
What does this collimation picture mean?
Tried to collimate my Maksutov, because something was off. I made it worse, so I gave it to a shop. After receiving it back everything was better than ever, but I noticed some echos (picture 1) and strangely repeating shapes (picture 2) when de-focussing on a far away street lamp. What is that? Just asking out of curiosity :-)
Lyra
How about a two-inch astronomical eyepiece?
Is a two-inch eyepiece better than a 1.25-inch eyepiece?Has anyone used it?Can you describe the effect:-)
Syzygi
Rent telescope time on southern hemisphere
Hi everyone! I was wondering if anyone has any good tips on where I could rent some telescope time on the southern hemisphere so I can get some images for the Messier challenge? I live way up north and it's difficult to get even equator located things because of my location, so all tips on where I could go online to rent time would be majorly appreciated!😊
Exosphere
Exos 2 PCM 8 dont move any help ?
Hey , I have Problems with my new pcm 8 goto . After installing all the driver and testing she works Fine but After a Rest and then try to adjust for the persiden she dont work or move anybody . Driver and cable are installed and correct and when I Go in explorerstars and lockte a planet and select for gaizing They do nothing . had anybody a Solution or tips ? Sorry for my Bad englisch . 😊
Exosphere
I Search Bag for my new setup ?
Hey guys, I'm looking for transport bags or crates for my setup that I recently purchased. My new setup: Bresser Messier 152l/1200 Bresser AR 90/500 Exos-2 PMC-Eight Go to
Jump
My first setup for Astrophotography
Hi, I'm new to astrophotography. Here's my setup. I have a lot to learn! :-)