Recent image with G-11 PMC-8 & ES 127 FCD-100 #G11 #astrophotography
Edited to include photon collection details.
Photon Collection Details:
AstroPorch, VA ~ Bortle 7 ~ Jennifer B. Shelly ~ 11/02/2019
ES Losmandy G-11 PMC-8 ~ ES 127 FCD-100 f/7.5
QHY 168C ~ 2" Optolong L-eNhance ~ ES 0.70x 3" FF/FR
Solomark F60 Guide Scope ~ QHY 5L-IIC
10 Lights ~ 300s ~ -20°C ~ Gain 4 ~ Offset 30
50 Bias ~ 0.001s ~ -20°C ~ Gain 4 ~ Offset 30
6 Darks ~ 300s ~ -20°C ~ Gain 4 ~ Offset 30
46 Flats ~ 0.75s ~ -20°C ~ Gain 4 ~ Offset 30
PixInsight 1.8.7 ~ APT 3.73 ~ Stellarium ~ Stellarium Scope ~ PHD2 ~ POTH
Beautiful image! Id be very happy with results like that. Once you get that spacing nailed ( im sure Jerry can help with that) i think youll be very satisfied with the results!toggle quoted messageShow quoted text
Director-Mark Slade Remote Observatory
ES CGE PMC-Eight (prototype)
On Nov 9, 2019, at 10:16 AM, Jennifer Shelly via Groups.Io <drunkendogg@...> wrote:
Jerry Hubbell - Explore Scientific VP Engineering
On Sat, Nov 9, 2019 at 10:16 AM, Jennifer Shelly wrote:
Additionally I am having a hard time finding the correct spacing for the FF/FR as my search results have yielded anywhere between 55 mm to 65 mm.Hi Jennifer,
We use the 3-inch 0.7x FRFF on the 6.5-inch ES 165 FPL53 ED APO CF scope (with a Moonlite focuser - I think they are the best) in the MSRO and it works pretty well. The scope is F/7 and with the FRFF it is f/5.2. The design spacing is 55 mm which is what we use. Our imaging train is a QHY163C camera with QHY FW-S and the FRFF. It's pretty flat in the middle but the field curvature starts to increase towards the corners when using larger chip cameras.
Vice President of Engineering
Explore Scientific, LLC.
jrh at explorescientific.com
1010 S. 48th Street
Springdale, AR 72762
Author: Scientific Astrophotography: How Amateurs Can Generate and Use Professional Imaging Data
Remote Observatories for Amateur Astronomers: Using High-Powered Telescopes From Home
Mark Slade Remote Observatory (MSRO) IAU MPC W54 Equipment
Mounts: ES PMC-Eight G11 + Telescope Drive Master (TDM)
Scopes: ES 165 FPL-53 ED APO CF, ES 102 FCD100 ED APO CF
Cameras: QHY174M-GPS + FW, QHY163C
Misc: 3-inch 0.7x Focal Reducer Field Flattener, Filters: Luminance,
Red, V-band Photometric, Diffuser, 200 lpmm Spectral Grating
Software: MaxIm DL 6, Cartes du Ciel, Astrometrica, AstroImageJ, AutoStakkert!
When I grow up I hope I can take such a picture. Beautiful.
Thanks for sharing
Wes, Southport NC
PMC-8, ES ED 127, 10" LX200GPS, Astro-Tech 8" Newt, ETX-90
Polemaster, Orion ST-80 and SAG
Electrical Engineer, Retired
Awesome picture. Great, crisp detail in there.
I second the 55 mm back focus to the focal plane. I believe that is a camera industry standard.
I had to send my scope back to ES for repair and collimation. This image is first light taken on 12/19/2019 of the Rosette Nebula. This image has the same spacing as the Horsehead image posted previously.
Photon collection details:
NGC 2237 ~ Rosette Nebula ~ 12/19/2019
AstroPorch, VA ~ Bortle 7 ~ -2.5°C
4 Lights ~ 600 seconds ~ -20°C
3 Darks ~ 600 seconds ~ -20°C
50 Bias ~ 0.000125 second ~ -20°C
10 Flats ~ 4.35938 seconds ~ -20°C
ES 127 FCD-100 Triplette APO f7.5
ES PMC-8 Losmandy G-11
QHY 168C ~ Unity Gain
MoonLite CFL 2.5" Focuser ~ Mini Controller V2
Optolong 2" L-enHance
QHY 5L-IIC ~ Solomark 130 mm Guide Scope
APT 3.85 ~ PHD2 ~ Stellarium + Scope
Mounts: ES PMC-8 G-11, ES PMC-8 EXOS-2
Scopes: ES ED127 FCD-100, ES Levy Comet Hunter, ES N208CF, Meade APO 70 MM Astrograph, QHY Mini Guide Scope
Cameras: QHY168C, ZWO ASI183MC-P, ZWO ASI183MM, Nikon D5600
Misc: MoonLite CFL 2.5 / High Res Stepper / V2 Mini Controller, Baader SteelTrack NT / SteelDrive II, Baader UFC, Optolong 2" L-Pro / L-eNhance
Imaging Software: APT, BYN, SharpCap Pro, ASICap
Processing Software: PixInsight, Lightroom, Premiere Elements