New PRICE! asking $900.00
FOR SALE: 12.5 inch f/6 Dobsonian telescope
Homebuilt by experienced telescope maker in 1980. The telescope tube construction is described in a previous SGN issue here: Building 12-inch Dob Truss tube design with professionally-made full thickness Coulter mirror -one of their best, recently re-aluminized. Focuser and secondary mirror/spider is a Novak unit. Standard dobsonian alt-azimuth mount (3/4-inch ply) is a nice wood grain finish with coating of Varathane. This is a large telescope and probably would be happy in a relatively permanent location, but is portable if you have lots of trunk space. Handling the tube is possible for one person but loading into and out of a car trunk is easier with two people. Telescope can be seen at the Fox Observatory later this winter.
Asking $900 but willing to negotiate. Contact John H. at 519-371-0670 or firstname.lastname@example.org.
iOptron AZ Mount Pro GoTo Alt-Az Mount
(Head Only) with cw/case.
Excellent condition, less than 6 month's old.
Asking price $1160 Contact Robert Atkinson email@example.com
iOptron AZ Mount Pro GoTo Alt-Az Mount (Head Only) MFR #8920
iOptron counterweight 5.5 kg MFR #827
iOptron aluminum hard case
•"level and go" intuitive GOTO setup
•33lb primary payload and 10lb secondary payload capacity, with a mount weighing only 13lbs
•On board rechargeable lithium ion battery for up to 10 hours of use
•Whisper quiet low-power consumption stepper motors
•Built-in WIFI adapter for full ASCOM, iOptron CommanderTM and Sky Safari wireless control
•Built-in 32-channel GPS receiver
Retails new for over $1400, save $400+
Meade ETX 125 (5”) Maksutov-Cassegrain telescope.
Comes with tripod and Autostar GOTO system. This telescope has been rarely used and is in “like new” condition. The tube of this scope is beautifully done with an image of the North America Nebula silkscreened on it. But good-looks are not all, there is a detailed description of the package provided in this pdf from the company that sold the ETX here: ETX pdf and a good review is provided by Rod Mollise here: ETX review Rod Mollise .Scroll down until you see a picture of the scope with the NA nebula on the tube.
Best offer over $400. Contact Trevor Falk at firstname.lastname@example.org
FOR SALE: Moonlite CRL 2.5 inch Large Format Crayford Newtonian Focuser
($592.10 new -see https://focuser.com/products.php) with Hi-Res Stepper Motor ($252.81 new). Flange for 14" tube, accepts 2" accessories (EP/camera). This is a true Crayford focuser, not the cheap "Crayford-style" knock-off. Not set up for manual focusing, requires hand paddle ($330 not included) for manual operation and computer control for remote focusing. This is meant for a remote imaging setup and comes from an abandoned project (12” scope). Over $850 plus taxes and shipping new.
Asking $600.00. Contact Paul Z. at email@example.com
Humane Physics 2nd edition
by Francis Mont
Available directly from the author at firstname.lastname@example.org,
From the Author:
Age Range: 16 and up, Grade Level: 10 and up. The author deals with the three most exciting areas of Classical Physics: Mechanics, Electrodynamics and Thermodynamics -- with a "Glimpse of the Future" chapter describing Einstein's Special Relativity Theory. Using both amusing anecdotes and serious, focused descriptions of major concepts, experiments, discoveries and theories, the author examines the lives and significance of the principal scientists. Non-mathematical explanations of basic concepts and fundamental laws are provided and consequences and applications pointed out. For advanced readers, the Appendix (called Math-Lovers' Paradise) points the way for further study, using advanced high-school mathematics.
Available at Amazon.com: Read a review here: CUSTOMER REVIEW.
Available directly from the author at email@example.com
Her website has more information: http://www.zoekessler.com
Like many women with attention deficit/hyperactivity disorder (ADHD), journalist and popular blogger Zoë Kessler was diagnosed late in life—well into adulthood, in fact. But instead of seeing this label as a burden to bear, Kessler decided to use it to gain a better understanding of herself, and to connect with others through her writing.
In this unique and engaging memoir, Kessler shares her own stories of living with ADHD in a way that is relatable, but never predictable. Inside, she describes how her impulsive behavior has affected her love life; how being disorganized once stood in the way of landing a job; and how inattentiveness has caused certain challenges in her relationships. Kessler also offers key coping skills based on her experience; skills that you can use to focus your energy, become more organized, and boost your self-esteem while tapping into creativity and humor.
Kessler’s story illustrates how being diagnosed with ADHD late into adulthood can be bewildering, but it also shows what a great opportunity it can be to take stock of your life and make real, lasting changes. Whether you share her diagnosis of ADHD, or just like a good story, ADHD According to Zoë will inspire you and encourage you to embrace your quirks.
For more information about Kessler and her work, please visit www.zoekessler.com