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Meade 911 Nubula filter

Started by Mark Shelton, 04/24/2010 02:46PM
Posted 04/24/2010 02:46PM Opening Post
Hi,
I have an old meade 911 filter. on the box it says its a nebula filter. On the filter is is marked meade 911. The filter screws on the back of my LX200.
Does anyone have any information they would like to share about this filter. I can not find much info.

Thanks

Mark Shelton
Posted 04/24/2010 03:54PM #1
Mark Shelton said:

Hi,
I have an old meade 911 filter. on the box it says its a nebula filter. On the filter is is marked meade 911. The filter screws on the back of my LX200.
Does anyone have any information they would like to share about this filter. I can not find much info.

Thanks

Mark Shelton
Mark,
See if there's a letter on it such as an "b" for broadband:
http://www.shopatron.com/products/productdetail/Meade+911B+Nebular+Filter+SCT+Thread/part_number=07524/1323
or an "x" for an o111:
http://www.shopatron.com/products/productdetail/Meade+911X+OIII+Nebular+Filter+SCT+Thread/part_number=07543/1323.0.1.1.57212.0.0.0.0?
or an "n" for narrowband:
http://www.cloudynights.com/item.php?item_id=63
If there's no letter following the number it may be an o111 such as this one:
http://observersoutlet.com/meade911oxygeniiinebularfilter.aspx
If it's an o111, the field will appear quite dark, as opposed to a broadband filter which will not reduce the starlight nearly as much.