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A week or so I good I did some preliminary research for a decent 32mm eyepiece. Looking at my results today I went for budget but decent.
I have ended up with a shortlist of: -
Revelation 32.0mm Plossl Eyepiece 1.25"
Celestron 93323 1-1/4-32 mm Omni Series Eyepiece
Baader Planetarium 32 mm Classic Ortho Eyepiece
My query today as I recheck my findings is the Revelation one. That is coming up at almost half the price of the other two (at www.telescopehouse.com)
But this eyepiece made my shortlist due to positive comments about the GSO build.
So, finally, my question, does the purchase price suggest this 32mm isn't a GSO?
No rush here. It's a wish list not a need list - as I remind myself... lol
Galaxy Centaurus A ( NGC 5128 ) in the southern constellation Centaurus
( please click / tap on image to see full size )
Updated again - to try to bring out more faint detail ...
Updated images ...
( 100% crop )
Centaurus A is relatively near to us in the local group of galaxies and is around 11 Million light years away. The unusual shape of Centaurus A is believed to be due to an ancient collision between a large elliptical galaxy and a much smaller spiral galaxy.
With an apparent magnitude of +6.8, Centaurus A is the fifth brightest galaxy in the night sky and in the middle of the 20th century it was identified as being the strongest radio source in the Centaurus constellation.
Galaxy - Centaurus A ( NGC 5128 )
Image ( Nova.astrometry.net ):
Center (RA, hms): 13h 25m 28.924s
Center (Dec, dms): -43° 01' 25.486"
Size: 60.5 x 41.1 arcmin
Orientation: Up is -89.9 degrees E of N
Telescope: Orion Optics CT12 Newtonian ( mirror 300mm, fl 1200mm, f4 ).
Corrector: ASA 2" Coma Corrector Quattro 1.175x.
Effective Focal Length / Aperture : 1410mm f4.7
Mount: Skywatcher AZ Eq6 GT
Guiding: TSOAG9 Off-Axis-Guider, Starlight Xpress Lodestar X2, PHD2
Camera: Nikon D5300 (unmodified) (sensor 23.5 x 15.6mm, 6016x4016 3.9um pixels)
Format: 14bit NEF
Long exposure noise reduction: off
Calibration: No darks, just master bias and master flat
HDR combination of eight sets of exposures (27, 28 & 29 April 2017):
85 x 240 sec ISO 800
16 x 120 sec ISO 800
16 x 60 sec ISO 800
16 x 30 sec ISO 800
16 x 15 sec ISO 800
16 x 8 sec ISO 800
16 x 4 sec ISO 800
16 x 2 sec ISO 800
Pixinsight May 2017
Evening everyone. Quick question about eyepieces in simple terminology:
I understand that the lower the number of an eyepiece, the more zoom it provides, and different makers provide different FOV. My question is that, for example, if I use a 2x Barlow with an 8mm ep, would I have a 4mm ep? (12mm+2x = 6mm; 40mm+2x = 20mm, etc.)