Joe, The OIII filter is one nebula filter. The other one I have is a UHC nebula filter. You definitely want the OIII for planetary nebulae. You saw how it picked up the faint nebulosity in Abell 21. If I would of had more time I could have showed you the faint Jones1 in Pegasus before it moved west into the light pollution. Debbie
From: Joe Bauman <bau@desnews.com> Date: 2005/02/08 Tue PM 12:39:48 MST To: Utah Astronomy <utah-astronomy@mailman.xmission.com> Subject: Re: [Utah-astronomy] OAS excursion to St. George
Hi Deb, it certainly was fascinating. You mentioned an OIII filter -- is that the same as a nebula filter? I have a nebula filter and probably should have used it! Best wishes, Joe
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