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1.25" vs. 2" Filters for Astrophotography - Cloudy Nights
- https://www.cloudynights.com/topic/579731-125-vs-2-filters-for-astrophotography/
- The slightly larger 31mm unmounted filter shows a 18% intensity drop in the corners vs 33% for the 1.25" filter. Images with both filter sizes can be corrected with these flats but I've found that at 33%, being able to precisely control the flat intensity can make a big difference in the result.
2" vs 1.25" lenses - Beginners Forum (No …
- https://www.cloudynights.com/topic/679887-2-vs-125-lenses/
- However, 2'' eyepieces are more expensive than 1.25 ($). You would need a 2'' diagonal too, which isn't supplied with the telescope ($$). Another option is using a focal reducer ($). It will allow you to get that 1.3º maximum with 1.25'' eyepieces. I don't use it, I prefer to keep things simple and a fixed focal length.
2" vs 1.25" focuser - Beginners Forum (No astrophotography)
- https://www.cloudynights.com/topic/40138-2-vs-125-focuser/
- Posted 16 September 2005 - 01:49 PM Well, a 2" focuser lets you use 2" diameter eyepieces. These are generally long focal length eyepieces that provide a very wide field of view. There is a maximum size field of view one can get into a given barrel diameter - the wider the barrel (2" vs. 1.25") the wider that maxium field of view. #3 Pontifex
2" or 1.25" Filters? - Beginning Deep Sky Imaging - Cloudy …
- https://www.cloudynights.com/topic/724900-2-or-125-filters/
- If you want to use a filter wheel, 2 in filter wheels require a lot more in travel on the focuser than 1.25 in ones, typically around 60 - 70mm as opposed to 40 -50 mm. With my 14 in Newtonian I made the mistake of buying a 2 in filter wheel only to find there was insufficient in travel available. John LostStar likes this #6 LostStar Lift Off
2 inch vs 1.25 inch - Getting Started General Help and …
- https://stargazerslounge.com/topic/138540-2-inch-vs-125-inch/
- Guys, Help me to understand the difference between 2 inch vs 1.25inch, other than physical barrel size. If I had, for example, a 32mm 1.25 and 32mm 2 inch, of same field of view, say, 65 or 70, what would the difference truly be? That is, is there any advantage to a 2inch over a 1.25inch in the s...
1.25 vs 2 Inch Eyepieces - AstronomyFlow.com
- https://astronomyflow.com/1-25-vs-2-inch-eyepieces/
- First, let’s dive into the difference between 1.25 and 2-inch eyepieces. Here Is The Main Difference Between 1.25 and 2 inch Eyepiece: A 2″ eyepiece will usually have better specifications and a wider field of view than a 1.25″. But this will involve a greater investment, while a 1.25″ eyepiece will be cheaper but will have some limitations.
telescope - Astronomy Stack Exchange
- https://astronomy.stackexchange.com/questions/13889/what-are-the-advantages-and-disadvantages-of-a-2-inch-eyepiece-versus-a-1-25-inc
- Typically 2" Eyepieces are used for lower magnification and or wider field of view. A 2" barrel will allow for a wider Apparent Field Of View through the Eyepiece that a 1.25" wouldn't normally allow. So if you had a 2" and 1.25" 32mm EP, the AFOV in the 2" would be greater, probably much greater.
1.25 inch vs 2 inch filters : AskAstrophotography - Reddit
- https://www.reddit.com/r/AskAstrophotography/comments/j66tko/125_inch_vs_2_inch_filters/
- It states that your diagonal is 26.2mm. a 1.25" is 31.8mm in diameter. thats a little close and will cause vignetting which can be removed with proper flats and processing but just go above that and go 36mm or 2" where you will be safe. 6 level 1 · 1 yr. ago
Peter Zelinka | A Guide to Astrophotography Filters
- https://www.peterzelinka.com/blog/2020/2/a-guide-to-astrophotography-filters
- The most common sizes are 1.25”, 2”, 31mm, and 36mm. The 1.25” and 2” filters usually have threads, so they can be easily installed to your filter wheel, camera, or telescope. The 31mm and 36mm filters don’t have threads, so they must be installed a little differently. Frankly, I found the installation process to be a major pain.
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