Ca apt p urre an and st stud udy th ud t e sp spec e tr ec tra of o stars tarss ta on n you our ur firrst s night ig ght ht outt! without leaving home! Daark ski k eess not o req e ui uire red d-w woork r s in n all l bu utt thee m th moostt liigght ht-p pol olllu u ute tte ed llo loca cati ca tion ti onss on U in Us ng ou ourr 1.25 25" gr 25" g aattin tin ingg on a sttaand n allon one DS one D LR LR, or on a tel or eles eles esco cope fitted co ttted d witth a DS DSLR LR, F LR, FIITS T , oorr ast s roono n mi mica call vi ca v de deoo ca came m ra me r , yo you ccaan ea easi s lyy: * Id denti en nti tify fyy the spe p ct c ra al ty type pees off sta t rrss and n thei th eirr te ei emp mper erat er atur at u es ur e . * De D te ect c th hee met etha hane ha nee on Ur Uran a uss and an d Nep e tu t n nee. * Me Meas asur su urre th he b bllue shi h ft f of brrig ght sup perrn noovvaae. e * Sttud dy th he coomp mpos ossit i io ion n off com omet etts. s. Our aaw Ou warrd-wi d-w dwiinn nnin ng RS Spe p c so soft ftwa ft w ree is ea wa e sy to leaarrn an le and d ea easy sy to us sy u e (fre (ffrre ee tr t ia i l avai avvai a la labl abl b e) e. Ther Th ere' er e s no e' no com mpl p iccaatted d caallib ibra raati rati tion on or st stee eep ee p lear le arniing cur ar arni urve vve e. S e ou Se o rw weebs bsit itte ffoor ex exci c ti t ng samp sa mple proje mp roje ro jectts an and vi v deeos os. s. Star Analyser Grating ($195) RSpec software ($109) Additional details and short videos at: field tested systems REAL-TIME SPECTROSCOPY rspec-astro.com s k y a n d t e l e s c o p e . o r g * J U LY 2 0 2 0 67http://www.ioptron.com http://www.rspec-astro.com http://www.skyandtelescope.org